MCQ Questions for Class 11 Physics Chapter 9 Mechanical Properties of Solids with Answers

Check the below NCERT MCQ Questions for Class 11 Physics Chapter 9 Mechanical Properties of Solids with Answers Pdf free download. MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. We have provided Mechanical Properties of Solids Class 11 Physics MCQs Questions with Answers to help students understand the concept very well. https://mcqquestions.guru/mcq-questions-for-class-11-physics-chapter-9/

Mechanical Properties of Solids Class 11 MCQs Questions with Answers

Mechanical Properties Of Solids MCQ Question 1.
A body of mass 1 kg is attached to one end of a wire and rotated in horizontal circle of diameter 40 cm with a constant speed of 2 m/s. what is the area of cross-section of the wire if the stress developed in the wire is 5 × 106 N/m²?
(a) 2 mm²
(b) 3 mm²
(c) 4 mm²
(d) 5 mm²

Answer

Answer: (c) 4 mm²


Mechanical Properties Of Solids Class 11 MCQ Question 2.
In a wire, when elongation is 2 cm energy stored is E. if it is stretched by 10 cm, then the energy stored will be
(a) E
(b) 2 E
(c) 4 E
(d) 25 E

Answer

Answer: (d) 25 E


MCQ On Mechanical Properties Of Solids Question 3.
Two wires A and B are of the same length. The diameters are in the ratio 1 : 2 and the Youngs modulus are in ratio 2 : 1. if they are pulled by the same force, then their elongations will be in ratio
(a) 4 : 1
(b) 1 : 4
(c) 1 : 2
(d) 2 : 1

Answer

Answer: (d) 2 : 1


Mechanical Properties Of Solids MCQ Pdf Question 4.
Hookes law essentially defines
(a) Stress
(b) Strain
(c) Yield point
(d) Elastic limit

Answer

Answer: (d) Elastic limit


MCQ On Mechanical Properties Of Solids Class 11 Question 5.
Longitudinal strain is possible in the case of
(a) Gases
(b) Liquid
(c) Only solids
(d) Only gases & liquids

Answer

Answer: (c) Only solids


Class 11 Physics Chapter 9 MCQ Question 6.
Two wires have the same material and length, but their masses are in the ration of 4 : 3. If they are stretched by the same force, their elongations will be in the ratio of
(a) 2 : 3
(b) 3 : 4
(c) 4 : 3
(d) 9 : 16

Answer

Answer: (b) 3 : 4


Mechanical Properties Of Solid MCQ Question 7.
A rubber cord of cross sectional area 1 mm² and unstretched length 10 cm is stretched to 12 cm and then released to project a stone of mass 5 gram. If Y for rubber = 5 ? 108N/m², then the tension in the rubber cord is
(a) 25 N
(b) 50 N
(c) 100 N
(d) 200 N

Answer

Answer: (c) 100 N


MCQ Questions On Mechanical Properties Of Solids Question 8.
Out of the following materials, whose elasticity is independent of temperature?
(a) Copper
(b) Invar steel
(c) Brass
(d) Silver

Answer

Answer: (b) Invar steel


MCQs On Mechanical Properties Of Solids Question 9.
An iron bar of length l m and cross section A m² is pulled by a force of F Newton from both ends so as to produce and elongation in meters. Which of the following statement statements is correct
(a) Elongation is inversely proportional to length l
(b) Elongation is directly proportional to cross section A
(c) Elongation is inversely proportional to A
(d) Elongation is directly proportional to Youngs modulus

Answer

Answer: (c) Elongation is inversely proportional to A


Mechanical Properties Of Solids MCQs Question 10.
The ratio of the change in dimension at right angles to the applied force to the initial dimension is known as
(a) Youngs modulus
(b) Poissons ratio
(c) Lateral strain
(d) Shearing strain

Answer

Answer: (c) Lateral strain


Class 11 Physics Chapter 9 MCQs Question 11.
Four wires whose lengths and diameter respectively are given below are made of the same material. Which of these will have the largest extension when same tension is applied?
(a) 0.50 m, 0.50 mm
(b) 1.00 mm, 1.00 mm
(c) 2.00 m, 2.00 mm
(d) 4.00 m, 4.00 mm

Answer

Answer: (a) 0.50 m, 0.50 mm


MCQ On Elasticity Class 11 Question 12.
When the intermolecular distance increases due to tensile force, then
(a) There is no force between the molecules
(b) There is a repulsive force between the molecules
(c) There is an attractive force between the molecules
(d) There is zero resultant force between the molecules

Answer

Answer: (c) There is an attractive force between the molecules


Class 11 Mechanical Properties Of Solids MCQ Question 13.
A body of mass 1 kg is attached to one end of a wire and rotated in horizontal circle of diameter 40 cm with a constant speed of 2 m/s. what is the area of cross-section of the wire if the stress developed in the wire is 5 × 106 N/m²?
(a) 2 mm²
(b) 3 mm²
(c) 4 mm²
(d) 5 mm²

Answer

Answer: (c) 4 mm²


MCQ Of Mechanical Properties Of Solids Question 14.
One end of a steel wire of area of cross-section 3 mm² is attached to the ceiling of an elevator moving up with an acceleration of 2.2 m/s². if a load of 8 kg is attached at its free end, then the stress developed in the wire will be
(a) 8 × 106 N/m²
(b) 16 × 106 N/m²
(c) 20 × 106 N/m²
(d) 32 × 106 N/m²

Answer

Answer: (d) 32 × 106 N/m²


Class 11 Physics Mechanical Properties Of Solids MCQs Question 15.
The ratio of the change in dimension at right angles to the applied force to the initial dimension is known as
(a) Youngs modulus
(b) Poissons ratio
(c) Lateral strain
(d) Shearing strain

Answer

Answer: (c) Lateral strain


MCQ Questions For Class 11 Physics Chapter 9 Question 16.
The magnitude of the force developed by raising the temperature from 0°C to 100°C of the iron bar of 1.00 m long and 1 cm² cross-section when it is held so that it is not permitted to expand or bend is (a = 10-5/oC and Y = 1011 N/m²)
(a) 103 N
(b) 104 N
(c) 105
(d) 109 N

Answer

Answer: (b) 104 N


Chapter 9 Physics Class 11 MCQs Question 17.
The upper end of wire 1 m long and 2 mm radius is clamped. The lower end is twisted through an angle of 45°. The angle of shear is
(a) 0.09°
(b) 0.9°
(c) 9°
(d) 90°

Answer

Answer: (a) 0.09°


Mechanical Properties Of Solids MCQ Questions Question 18.
The radii of two wires of a same material are in ratio 2 : 1. if the wires are stretched by equal forces, the stress produced in them will be
(a) 2 : 1
(b) 4 : 1
(c) 1 : 4
(d) 1 : 2

Answer

Answer: (c) 1 : 4


Class 11 Physics Mechanical Properties Of Solids MCQ Question 19.
A rubber cord of cross sectional area 1 mm² and unstretched length 10 cm is stretched to 12 cm and then released to project a stone of mass 5 gram. If Y for rubber = 5 ? 108N/m², then the tension in the rubber cord is
(a) 25 N
(b) 50 N
(c) 100 N
(d) 200 N

Answer

Answer: (c) 100 N


Class 11 Physics Ch 9 MCQ Question 20.
In a wire, when elongation is 2 cm energy stored is E. if it is stretched by 10 cm, then the energy stored will be
(a) E
(b) 2 E
(c) 4 E
(d) 25 E

Answer

Answer: (d) 25 E


We hope the given NCERT MCQ Questions for Class 11 Physics Chapter 9 Mechanical Properties of Solids with Answers Pdf free download will help you. If you have any queries regarding CBSE Class 11 Physics Mechanical Properties of Solids MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

MCQ Questions for Class 11 Physics Chapter 7 System of Particles and Rotational Motion with Answers

Check the below NCERT MCQ Questions for Class 11 Physics Chapter 7 System of Particles and Rotational Motion with Answers Pdf free download. MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. We have provided System of Particles and Rotational Motion Class 11 Physics MCQs Questions with Answers to help students understand the concept very well. https://mcqquestions.guru/mcq-questions-for-class-11-physics-chapter-7/

System of Particles and Rotational Motion Class 11 MCQs Questions with Answers

System Of Particles And Rotational Motion MCQ Question 1.
A body of M.I. 3 kg m² rotating with an angular velocity 2 rad/s has the same K.E. as a mass of 12 kg moving with a velocity of
(a) 1 m/s
(b) 2 m/s
(c) 4 m/s
(d) 8 m/s

Answer

Answer: (a) 1 m/s


System Of Particles And Rotational Motion Class 11 MCQ Question 2.
A particle performing uniform circular motion has angular momentum L. If its angular frequency is doubled and its kinetic energy halved, then the new angular momentum is
(a) L/2
(b) L/4
(c) 2 L
(d) 4 L

Answer

Answer: (b) L/4


Class 11 Physics Chapter 7 MCQ Question 3.
A thin uniform, circular ring is rolling down an inclined plane of inclination 300 without slipping. Its linear acceleration along the inclined plane will be
(a) g/2
(b) g/3
(c) g/4
(d) 2g/3

Answer

Answer: (a) g/2


Rotational Motion Class 11 MCQ Question 4.
Moment of inertia depends on
(a) Distribution of particles
(b) Mass
(c) Position of axis of rotation
(d) All of these

Answer

Answer: (d) All of these


MCQ Questions For Class 11 Physics Chapter 7 Question 5.
Calculate the M.I. of a thin uniform ring about an axis tangent to the ring and in a plane of the ring, if its M.I. about an axis passing through the centre and perpendicular to plane is 4 kg m².
(a) 12 kg m²
(b) 3 kg m²
(c) 6 kg m²
(d) 9 kg m²

Answer

Answer: (c) 6 kg m²


Chapter 7 Physics Class 11 MCQs Question 6.
If a body is rotating about an axis, passing through its centre of mass then its angular momentum is directed along its
(a) Radius
(b) Tangent
(c) Circumference
(d) Axis of rotation

Answer

Answer: (d) Axis of rotation


MCQ On System Of Particles And Rotational Motion Question 7.
A solid cylinder of mass 20 kg, has length 1 metre and radius 0.5m. then its momentum of inertia in kg m² about its geometrical axis is
(a) 2.5
(b) 5
(c) 1.5
(d) 3

Answer

Answer: (a) 2.5


Ch 7 Physics Class 11 MCQ Question 8.
A particle moves on a circular path with decreasing speed. Choose the correct statement.
(a) Angular momentum remains constant.
(b) Acceleration is towards the centre.
(c) Particle moves on a spiral path with decreasing radius.
(d) The direction of angular momentum remains constant.

Answer

Answer: (d) The direction of angular momentum remains constant.


Class 11 Physics Ch 7 MCQ Question 9.
The M.I. of uniform circular disc about a diameter is I. its M.I. about an axis perpendicular to its plane passing through a point on its rim will be
(a) 4 I
(b) 6 I
(c) 8 I
(d) 9 I

Answer

Answer: (b) 6 I


MCQ On Rotational Motion Class 11 Question 10.
Which is the wrong relation from the following?
(a) t = I a
(b) F = ma
(c) L = I w
(d) I = t a

Answer

Answer: (d) I = t a


Class 11 Physics Chapter 7 MCQ With Answers Question 11.
A solid sphere is rotating in free space. If the radius of the sphere is increased keeping mass same, which one of the following will not be affected?
(a) Moment of inertia
(b) Angular momentum
(c) Angular velocity
(d) Rotational kinetic energy

Answer

Answer: (b) Angular momentum


Class 11 System Of Particles And Rotational Motion MCQ Question 12.
A particle moves on a circular path with decreasing speed. Choose the correct statement.
(a) Angular momentum remains constant.
(b) Acceleration is towards the centre.
(c) Particle moves on a spiral path with decreasing radius.
(d) The direction of angular momentum remains constant.

Answer

Answer: (d) The direction of angular momentum remains constant.


Class 11 Physics System Of Particles And Rotational Motion MCQ Question 13.
A body of M.I. 3 kg m² rotating with an angular velocity 2 rad/s has the same K.E. as a mass of 12 kg moving with a velocity of
(a) 1 m/s
(b) 2 m/s
(c) 4 m/s
(d) 8 m/s

Answer

Answer: (a) 1 m/s


Class 11 Rotational Motion MCQ Question 14.
A hollow cylinder and a solid cylinder having different mass diameter are released from rest simultaneously from the of an inclined plane. Which will reach the bottom first?
(a) solid cylinder
(b) cant be determined without knowing their masses
(c) hollow cylinder
(d) cant be determined without knowing their diameters

Answer

Answer: (a) solid cylinder


MCQ Of Chapter 7 Physics Class 11 Question 15.
Which is the wrong relation from the following?
(a) t = I a
(b) F = ma
(c) L = I w
(d) I = t a

Answer

Answer: (d) I = t a


MCQ Of Rotational Motion Class 11 Question 16.
If I, a and t are the moment of inertia, angular acceleration and torque respectively of a body rotating about any axis with angular velocity w, then
(a) t = Ia
(b) t = Iw
(c) I = tw
(d) a = Iw

Answer

Answer: (a) t = Ia


Chapter 7 Class 11 Physics MCQ Question 17.
A dancer on ice spins faster when she folds here arms. This is due to
(a) Increases in energy and increase in angular momentum
(b) Decrease in friction at the skates
(c) Constant angular momentum and increase in kinetic energy
(d) Increase in energy an decreases in angular momentum

Answer

Answer: (c) Constant angular momentum and increase in kinetic energy


System Of Particles And Rotational Motion MCQ Questions Question 18.
The moment of inertia of a uniform semicircular disc of mass M and radius about a line perpendicular to the plane of the disc through the centre is
(a) (2/5) Mr²
(b) (1/4) Mr power 2
(c) (1/2) Mr²
(d) Mr²

Answer

Answer: (c) (1/2) Mr²


Rotational Motion MCQ With Solutions Question 19.
A particle moves for 20 s with velocity 3 m/s and then moves with velocity 4 m/s for another 20 s and finally moves with velocity 5 m/s for next 20 s. what is the average velocity of the particle?
(a) 3 m/s
(b) 4 m/s
(c) 5 m/s
(d) Zero

Answer

Answer: (b) 4 m/s


Chapter 7 Physics Class 11 MCQ Question 20.
For increasing the angular velocity of an object by 10%, the kinetic energy has to be increased by
(a) 40%
(b) 20%
(c) 10%
(d) 21%

Answer

Answer: (d) 21%


We hope the given NCERT MCQ Questions for Class 11 Physics Chapter 7 System of Particles and Rotational Motion with Answers Pdf free download will help you. If you have any queries regarding CBSE Class 11 Physics System of Particles and Rotational Motion MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

MCQ Questions for Class 11 Physics Chapter 8 Gravitation with Answers

Check the below NCERT MCQ Questions for Class 11 Physics Chapter 8 Gravitation with Answers Pdf free download. MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. We have provided Gravitation Class 11 Physics MCQs Questions with Answers to help students understand the concept very well. https://mcqquestions.guru/mcq-questions-for-class-11-physics-chapter-8/

Gravitation Class 11 MCQs Questions with Answers

Gravitation Class 11 MCQ Question 1.
The radius of the earth is 6400 km and g = 10 m/s². In order that a body of 5 kg weighs zero at the equator, the angular speed of the earth is
(a) 1/80 rad /s
(b) 1/400 rad /s
(c) 1/800 rad /s
(d) 1/1600 rad /s

Answer

Answer: (c) 1/800 rad /s


Gravitation MCQ Class 11 Question 2.
A body weighs 500 N on the surface of the earth. How much would it weight half way below the surface of the earth?
(a) 1000 N
(b) 500 N
(c) 250 N
(d) 125 N

Answer

Answer: (c) 250 N


MCQ Questions On Gravitation For Class 11 Question 3.
The time – period of a satellite of earth is 5 hours. If the separation between the earth and the satellite is increased to 4 times the previous value, the new time – period will become
(a) 10 hours
(b) 20 hours
(c) 40 hours
(d) 80 hours

Answer

Answer: (c) 40 hours


Class 11 Gravitation MCQ Question 4.
A missile is launched with a velocity less than the escape velocity. The sum of its kinetic and potential energy is
(a) Positive
(b) Negative
(c) Zero
(d) may be positive or negative

Answer

Answer: (b) Negative


MCQ On Gravitation Class 11 Question 5.
What would be the duration of the year if the distance between the earth and the sun gets doubled?
(a) 1032 days
(b) 129 days
(c) 365 days
(d) 730 days

Answer

Answer: (a) 1032 days


MCQ Of Gravitation Class 11 Question 6.
If a body of mass m is taken out from a point below the surface of earth equal to half the radius of earth, R, to a height R above the earths surface, then work done on it will be
(a) (5/6) mgR
(b) (6/7) mgR
(c) (7/8) mgR
(d) (8/9) mgR

Answer

Answer: (c) (7/8) mgR


Class 11 Physics Chapter 8 MCQ Question 7.
A artificial satellite moving in a circular orbit around the earth has a total (kinetic + potential) energy E0. Its potential energy is
(a) 2E0
(b) E0
(c) 1.5 E0
(d) -E0

Answer

Answer: (a) 2E0


Class 11 Physics Gravitation MCQ Question 8.
A body is projected vertically from the surface of the earth of radius R with velocity equal to half of the escape velocity. The maximum height reached by the body is
(a) R
(b) R/2
(c) R/3
(d) R/4

Answer

Answer: (c) R/3


MCQ Questions For Class 11 Physics Chapter 8 Question 9.
The escape velocity for a body projected vertically upwards from the surface of the earth is 11 km/s. If the body is projected at an angle of 450 with the vertical, the escape velocity will be
(a) 11/√2 km/s
(b) 11√2 km/s
(c) 2 km/s
(d) 11 km/s

Answer

Answer: (d) 11 km/s


MCQ Questions On Gravitation For Class 11 With Solutions Question 10.
There is no atmosphere on the moon because
(a) it is closer to the earth
(b) it revolves round the earth
(c) it gets light from the sun
(d) the escape velocity of gas molecules is less than their root mean square velocity here

Answer

Answer: (d) the escape velocity of gas molecules is less than their root mean square velocity here


Gravitation MCQs With Answers Pdf Class 11 Question 11.
The value of g at a particular point is 9.8 m/sec² suppose the earth suddenly shrink uniformly to half its present size without losing any mass. The value of g at the same point (assuming that the distance of the point from the centre of the earth does not shrink) will become
(a) 9.8 m/sec²
(b) 4.9 m/sec²
(c) 19.6 m/sec²
(d) 2.45 m/sec²

Answer

Answer: (a) 9.8 m/sec²


MCQs On Gravitation Class 11 Question 12.
A missile is launched with a velocity less than the escape velocity. The sum of its kinetic and potential energy is
(a) Positive
(b) Negative
(c) Zero
(d) may be positive or negative

Answer

Answer: (b) Negative


MCQ Gravitation Class 11 Question 13.
If the radius of the earth were to be raise by 1% its mass remaining the same, the acceleration due to gravity on the surface of the earth will
(a) increase by 1%
(b) decrease by 2%
(c) decrease by 1%
(d) increase by 2%

Answer

Answer: (d) increase by 2%


MCQ On Gravitation For Class 11 Pdf Question 14.
A body is projected vertically from the surface of the earth of radius R with velocity equal to half of the escape velocity. The maximum height reached by the body is
(a) R
(b) R/2
(c) R/3
(d) R/4

Answer

Answer: (c) R/3


Class 11 Physics Ch 8 MCQ Question 15.
The escape velocity of projection from the earth is approximately (R = 6400 km)
(a) 7 km/sec
(b) 112 km/sec
(c) 12.2 km/sec
(d) 1.1 km/sec

Answer

Answer: (c) 12.2 km/sec


MCQ Of Chapter Gravitation Class 11 Question 16.
Who among the following first gave the experimental velocity of G?
(a) Cavendish
(b) Copernicus
(c) Brook Taylor
(d) none of these

Answer

Answer: (a) Cavendish


Gravitation Class 11 MCQs Question 17.
A satellite S is move in an elliptical orbit around the earth. The mass of the satellite is very small compared to the mass of the earth .
(a) The acceleration of S is always directed towards the centre of the earth.
(b) The angular momentum of S about the centre of the earth changes in direction, but its magnitude remains constant.
(c) The total mechanical energy of S varies periodically with time.
(d) The linear momentum of S remains constant in magnitude.

Answer

Answer: (a) The acceleration of S is always directed towards the centre of the earth.


Ch 8 Physics Class 11 MCQ Question 18.
The mean radius of the earth is R, its angular speed on its own axis is w and the acceleration due to gravity at earths surface is g. The cube of the radius of the orbit of a geo-stationary satellite will be
(a) r²g / w
(b) R²w²/ g
(c) RG w²
(d) R²g / w²

Answer

Answer: (d) R²g / w²


Chapter 8 Physics Class 11 MCQs Question 19.
If the distance between the earth and the sun were half its present value, the number of day in a year would have been
(a) 64.5
(b) 129
(c) 182.5
(d) 730

Answer

Answer: (b) 129


Gravitation Class 11 MCQ Questions Question 20.
The masses of two planets are in the ratio 1 : 2. Their radii are in the ratio 1 : 2. The acceleration due to gravity on the planets are in the ratio.
(a) 1 : 2
(b) 2 : 1
(c) 3 : 5
(d) 5 : 3

Answer

Answer: (a) 1 : 2


We hope the given NCERT MCQ Questions for Class 11 Physics Chapter 8 Gravitation with Answers Pdf free download will help you. If you have any queries regarding CBSE Class 11 Physics Gravitation MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

MCQ Questions for Class 11 Physics Chapter 5 Laws of Motion with Answers

Check the below NCERT MCQ Questions for Class 11 Physics Chapter 5 Laws of Motion with Answers Pdf free download. MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. We have provided Laws of Motion Class 11 Physics MCQs Questions with Answers to help students understand the concept very well. https://mcqquestions.guru/mcq-questions-for-class-11-physics-chapter-5/

Laws of Motion Class 11 MCQs Questions with Answers

Laws Of Motion Class 11 MCQ With Answers Question 1.
The mass of a body which is equal to the ratio of the force acting on a body to the acceleration produced in the body is
(a) the gravitational mass
(b) the electromagnetic mass
(c) the internal mass
(d) the inertial mass

Answer

Answer: (d) the inertial mass


Laws Of Motion Class 11 MCQ Question 2.
A spherical ball of mass 10-6 kg hits a wall 1000 times per second normally with a velocity of 1000 m/s and rebounds with same velocity along the initial direction. The force experienced by the wall is
(a) 1 N
(b) 4 N
(c) 2 N
(d) 8 N

Answer

Answer: (c) 2 N


Class 11 Physics Chapter 5 MCQ Question 3.
The force required to produce an acceleration of 2 m/s² on a mass of 2 kg is
(a) 4 N
(b) 10 N
(c) 22 N
(d) 18 N

Answer

Answer: (a) 4 N


Laws Of Motion MCQ Class 11 Question 4.
A machine gun fires a bullet of mass 40 g with a velocity of 1200 ms-1. The man holding it can exert a maximum force on 144 N on the gum. How many bullets can he fire per second at the most?
(a) one
(b) four
(c) two
(d) three

Answer

Answer: (d) three


MCQ On Laws Of Motion Class 11 Question 5.
A passenger in a moving bus is thrown forward when the bus is suddenly stopped. This is explained
(a) by Newtons first law
(b) by Newtons second law
(c) by Newtons third law
(d) by the principle of conservation of momentum

Answer

Answer: (a) by Newtons first law


MCQ Questions For Class 11 Physics Chapter 5 Question 6.
A passenger sitting in a bus moving at uniform speed, feels pushed backward whenever the bus is accelerated forward. This type of force is called
(a) Gravitational force
(b) real force
(c) fictitious force or pseudo force
(d) frictional force

Answer

Answer: (c) fictitious force or pseudo force


MCQ Of Laws Of Motion Class 11 Question 7.
A body of mass 5 kg is travelling with a uniform velocity of 2 m/s. Its momentum is
(a) 10 kg m/s
(b) 7 kg m/s
(c) 2 .5 kg m/s
(d) 3 kg m/s

Answer

Answer: (a) 10 kg m/s


Law Of Motion Class 11 MCQ Question 8.
Inside the nucleus, two protons are held together by a force which overcomes the repulsion. This force is called
(a) gravitational force
(b) electrostatic force
(c) weak force
(d) strong force

Answer

Answer: (d) strong force


Class 11 Laws Of Motion MCQ Question 9.
A block of wood is placed on a surface. A force is applied parallel to the surface to move the body. The frictional force developed acts
(a) normal to the surface upwards
(b) normal to the surface downwards
(c) along the direction of the applied force
(d) opposite to the direction of the applied force

Answer

Answer: (d) opposite to the direction of the applied force


Class 11 Physics Chapter 5 MCQ With Answers Question 10.
A bullet of mass 25 g moving with a velocity of 200 cm/s is stopped within 5 cm of the target. The average resistance offered by the target is
(a) 1 N
(b) 2 N
(c) 3 N
(d) 4 N

Answer

Answer: (a) 1 N


MCQ Questions On Laws Of Motion Class 11 Question 11.
The mass of a body is 2 kg. It weight is
(a) 19.6 N
(b) 20 N
(c) 30 N
(d) 40 N

Answer

Answer: (a) 19.6 N


Class 11 Physics Ch 5 MCQ Question 12.
A body is sliding down a rough inclined plane which makes an angle of 30 degree with the horizontal. If the coeffcient of friction is 0.26, the acceleration in m/s² is
(a) 1.95
(b) 2.78
(c) 3.47
(d) 4.6

Answer

Answer: (b) 2.78


Ch 5 Physics Class 11 MCQ Question 13.
A gun of mass 1000 kg fires a projectile of mass 1 kg with a horizontal velocity of 100 m/s. The velocity of recoil of the gun in the horizontal direction is
(a) 5 m/s
(b) 0.1 m/s
(c) 15 m/s
(d) 20 m/s

Answer

Answer: (b) 0.1 m/s


Chapter 5 Physics Class 11 MCQs Question 14.
A block of wood is placed on a surface. A force is applied parallel to the surface to move the body. The frictional force developed acts
(a) normal to the surface upwards
(b) normal to the surface downwards
(c) along the direction of the applied force
(d) opposite to the direction of the applied force

Answer

Answer: (d) opposite to the direction of the applied force


Class 11 Physics Laws Of Motion MCQ With Answers Question 15.
A block of mass 2 kg rests on a rough inclined plane making an angle of 30 degree with the horizontal. The coefficient of static friction between he block and the plane is 0.7. The frictional force on the block is
(a) 9.8 N
(b) 0.7 × 9.8 × √3 N
(c) 9.8 × √3 N
(d) 0.7 × 9.8 N

Answer

Answer: (d) 0.7 × 9.8 N


MCQs On Laws Of Motion Class 11 Question 16.
A particle of mass 0.3 kg is subjected to a force F = -kx with k = 15 N/m. What will be its initial acceleration if it is released from a point 20 cm away from the origin?
(a) 15 m/s²
(b) 3 m/s²
(c) 10 m/s²
(d) 5 m/s²

Answer

Answer: (c) 10 m/s²


Laws Of Motion Class 11 MCQs Question 17.
Two bodies of masses 4 kg and 5 kg are acted upon by the same force. If the acceleration of lighter body is 2 m/s², the acceleration of heavier body is
(a) 1 m/s²
(b) 1.2 m/s²
(c) 1.6 m/s²
(d) 1.8 m/s²

Answer

Answer: (c) 1.6 m/s²


MCQ On Laws Of Motion Class 11 Pdf Question 18.
Out of the basic forces , gravitational force
(a) ranks first in strength
(b) ranks second in strength
(c) ranks third in strength
(d) ranks fourth in strength

Answer

Answer: (d) ranks fourth in strength


Question 19.
The frame of reference attached to a satellite of the earth is
(a) an inertial frame
(b) an absolute frame at rest with respect to the stars
(c) a non – inertial frame
(d) a gravitational frame

Answer

Answer: (c) a non – inertial frame


Question 20.
A block of mass M is placed on a flat surface. A force is applied to move it parallel to the surface. The frictional force f developed is proportional to the
(a) square of the mass of the body
(b) mass of the body
(c) reciprocal of the mass of the body
(d) reciprocal of the square of the body

Answer

Answer: (b) mass of the body


We hope the given NCERT MCQ Questions for Class 11 Physics Chapter 5 Laws of Motion with Answers Pdf free download will help you. If you have any queries regarding CBSE Class 11 Physics Laws of Motion MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.

MCQ Questions for Class 11 Physics Chapter 4 Motion in a Plane with Answers

Check the below NCERT MCQ Questions for Class 11 Physics Chapter 4 Motion in a Plane with Answers Pdf free download. MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. We have provided Motion in a Plane Class 11 Physics MCQs Questions with Answers to help students understand the concept very well. https://mcqquestions.guru/mcq-questions-for-class-11-physics-chapter-4/

Motion in a Plane Class 11 MCQs Questions with Answers

Motion In A Plane Class 11 MCQ Question 1.
The angular velocity depends upon the rate of change of the?
(a) Angular acceleration
(b) Angular Distance.
(c) Angular Displacement.
(d) torque

Answer

Answer: (c) Angular Displacement.


Class 11 Physics Chapter 4 MCQ Question 2.
A small body attached at the end of an inextensible string completes a vertical circle, then its
(a) angular momentum remains constant
(b) linear momentum remains constant
(c) angular velocity remains constant
(d) total mechanical energy remains constant

Answer

Answer: (d) total mechanical energy remains constant


MCQ Questions For Class 11 Physics Chapter 4 Question 3.
A cyclist goes round a circular path of circumference 343 m in s. The angle made by him, with the vertical is
(a) 440
(b) 420
(c) 430
(d) 450

Answer

Answer: (d) 450


Motion In Plane Class 11 MCQ Question 4.
A body makes a displacement of 4 m due East from a point O and then makes displacement of 3 m due North. Its resultant displacement from O
(a) 7 m
(b) 1 m
(c) 5 m
(d) 1 . 2 m

Answer

Answer: (c) 5 m


Class 11 Physics Chapter 4 MCQ With Answers Question 5.
A body is traveling in a circle at constant speed. It
(a) has an inward acceleration
(b) has constant velocity.
(c) has no acceleration
(d) has an outward radial acceleration

Answer

Answer: (a) has an inward acceleration


MCQ On Motion In A Plane Class 11 Question 6.
When a body P moves on a circular path, the centripetal acceleration is
(a) directed inwards from P, to the centre of the circle
(b) directed tangential to the circumference of the circle, at P
(c) directed perpendicular to the planc of the circle, at P
(d) directed outward, perpendicular to the circumference of the circle

Answer

Answer: (a) directed inwards from P, to the centre of the circle


Ch 4 Physics Class 11 MCQ Question 7.
A coin kept on a rotating gramophone disc just begins to slip if its centre is at a distance of 8 cm from the centre of the disc. The angular velocity of the gramophone disc is then doubled. Through what distance, the coin should be shifted towards the centre, so that the coin will just slip?
(a) 2 cm
(b) 6 cm
(c) 16 cm
(d) 4 cm

Answer

Answer: (a) 2 cm


Class 11 Physics Ch 4 MCQ Question 8.
A can filled with water is revolved in a vertical circle of radius 4 metre and the water does not fall down. The time period of revolution will be
(a) 4 sec
(b) 10 sec
(c) 8 sec
(d) 1 sec

Answer

Answer: (a) 4 sec


Chapter 4 Physics Class 11 MCQs Question 9.
When angular velocity changes with respect to time then?
(a) an angular acceleration is produced
(b) a linear acceleration is produced
(c) it constitute a couple
(d) a linear velocity is produced

Answer

Answer: (a) an angular acceleration is produced


Motion In A Plane MCQ Class 11 Question 10.
The total flight requires a time that is?
(a) four times the time necessary to reach the maximum height.
(b) thrice the time necessary to reach the maximum height
(c) equal to the time necessary to reach the maximum height.
(d) twice the time necessary to reach the maximum height

Answer

Answer: (d) twice the time necessary to reach the maximum height


MCQ Questions On Motion In A Plane Class 11 Question 11.
The path followed by a projectile is called its?
(a) Territory
(b) Treasury
(c) Tractor
(d) Trajectory

Answer

Answer: (d) Trajectory


Chapter 4 Physics Class 11 MCQ Question 12.
One radian is defined to be the angle subtended where the arc length S is exactly equal to the?
(a) radius of the circle.
(b) diameter of the circle.
(c) circumference of the circle.
(d) half of radius of the circle.

Answer

Answer: (a) radius of the circle.


MCQ Of Motion In Plane Class 11 Question 13.
A car sometimes overturns while taking a turn. When it overturns, it is
(a) the inner wheel which leaves the ground first
(b) either inner wheel or the outer wheel leaves the ground
(c) both the wheel leave the ground simultaneously
(d) the outer wheel which leaves the ground first

Answer

Answer: (a) the inner wheel which leaves the ground first


MCQ Of Chapter 4 Physics Class 11 Question 14.
A body travels along the circumference of a circle of radius 2 m with a linear velocity of 6 m/s . Then its angular velocity is
(a) 6 rad /s
(b) 3 rad /s
(c) 2 rad / s
(d) 4 rad / s

Answer

Answer: (b) 3 rad /s


Class 11 Motion In A Plane MCQ Question 15.
The centripetal component of acceleration arises when?
(a) The direction of motion is changed.
(b) The direction propagation is changed.
(c) The direction of gravity is changed.
(d) The direction of projectile is changed.

Answer

Answer: (a) The direction of motion is changed.


Question 16.
The word centripetal is derived from two Greek words meaning?
(a) Seeking the situation.
(b) Seeking the centre.
(c) Touching the centre.
(d) Leaving the centre.

Answer

Answer: (b) Seeking the centre.


Question 17.
A car is moving with a speed of 30 m/s on a circular path of radius 500 m. Its speed is increasing at the rate of 2 m/s². The acceleration of the car is
(a) 2 m/s²
(b) 9.8 m/s²
(c) 1.8 m/2
(d) 2.7 m/s²

Answer

Answer: (d) 2.7 m/s²


Question 18.
One radian is equal to?
(a) 57.7o
(b) 53.7o
(c) 59.3o
(d) 57.3o

Answer

Answer: (d) 57.3o


Question 19.
A body is moving along a circle with an increasing speed. It possesses?
(a) centripetal acceleration only (ac)
(b) tangential acceleration only (ar)
(c) both tangential and centripetal acceleration (ar and ac)
(d) No acceleration

Answer

Answer: (c) both tangential and centripetal acceleration (ar and ac)


Question 20.
The path of a particle is given by the expression y = at + bt², where a and b are constants . Y is the displacement at time t. Its velocity at any instant is given by
(a) a + 2bt
(b) zero
(c) 2bt
(d) at

Answer

Answer: (a) a + 2bt


We hope the given NCERT MCQ Questions for Class 11 Physics Chapter 4 Motion in a Plane with Answers Pdf free download will help you. If you have any queries regarding CBSE Class 11 Physics Motion in a Plane MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon.