100 High-Scoring MCQs on Rotational and Circular Motion (Set - 2) | Class 11 Physics | Unit 5

This post contains 100 carefully selected multiple-choice questions (MCQs) from Unit-5: Circular and Rotational Motion of Class 11 Physics, designed strictly according to the FBISE syllabus. These MCQs include a well-balanced mix of conceptual and numerical problems, making them exam-ready, revision-friendly, and high-scoring.
Whether you are preparing for annual board exams, chapter tests, or competitive entry exams, this collection thoroughly covers all the key concepts and formulas of circular and rotational motion, helping students master the chapter with confidence.
This unit-wise MCQ set includes questions from:
Angular displacement, velocity, and acceleration
Equations of angular motion and their applications
Uniform and non-uniform circular motion
Centripetal acceleration and centripetal force
Sources of centripetal force: tension, friction, gravity, and normal force
Motion on banked curves and the banking angle formula
Orbital motion of satellites and orbital velocity derivation
Weightlessness and artificial gravity in satellites
Moment of inertia and rotational kinetic energy of various bodies
Torque, angular momentum, and conservation of angular momentum
Numerical applications combining rotational dynamics and circular motion
Real-life examples of rotational and circular motion in mechanics
Each MCQ is provided with the correct answer and a clear, concise explanation, helping students strengthen concepts, avoid common mistakes, and solve numerical problems confidently.
Prepare smartly, revise efficiently, and boost your exam score in Unit-5: Circular and Rotational Motion with these 100 high-yield, Exam-style MCQs.

MCQs No. 1

A particle moving in a circle with uniform speed has:
a. Zero acceleration
b. Tangential acceleration
c. Centripetal acceleration
d. No velocity

The Correct Answer is option c. Centripetal acceleration

Explanation:
Even with constant speed, direction changes continuously, giving centripetal acceleration.

MCQs No. 2

Angular displacement is measured in:
a. Degree
b. Radian
c. Meter
d. Second

The Correct Answer is option b. Radian

Explanation:
The SI unit of angular displacement is radian, defined as the angle subtended by an arc equal to the radius.

MCQs No. 3

The relation between linear displacement and angular displacement is:
a. s = θ / r
b. s = rθ
c. s = r²θ
d. s = θr²

The Correct Answer is option b. s = rθ

Explanation:
Linear displacement along the circumference is equal to the product of radius and angular displacement.

MCQs No. 4

The SI unit of angular velocity is:
a. rad/s
b. m/s
c. rad/s²
d. m/s²

The Correct Answer is option a. rad/s

Explanation:
Angular velocity is the rate of change of angular displacement with time.

MCQs No. 5

The relation between linear velocity and angular velocity is:
a. v = ω / r
b. v = rω
c. v = r²ω
d. v = ωr²

The Correct Answer is option b. v = rω

Explanation:
Linear velocity of a rotating body is directly proportional to angular velocity and radius.

MCQs No. 6

Which quantity remains constant in uniform circular motion?
a. Velocity
b. Acceleration
c. Speed
d. Force

The Correct Answer is option c. Speed

Explanation:
Only the magnitude of velocity (speed) remains constant, while direction changes.

MCQs No. 7

Angular acceleration is defined as the rate of change of:
a. Angular displacement
b. Angular velocity
c. Linear velocity
d. Torque

The Correct Answer is option b. Angular velocity

Explanation:
Angular acceleration describes how fast angular velocity changes with time.

MCQs No. 8

The SI unit of angular acceleration is:
a. rad/s
b. rad/s²
c. m/s
d. m/s²

The Correct Answer is option b. rad/s²

Explanation:
Angular acceleration is change in angular velocity per second.

MCQs No. 9

Which equation is analogous to v = u + at in rotational motion?
a. θ = ωt
b. ω = ω₀ + αt
c. ω² = rθ
d. τ = Iα

The Correct Answer is option b. ω = ω₀ + αt

Explanation:
This is the first equation of angular motion.

MCQs No. 10

Centripetal acceleration acts:
a. Along velocity
b. Tangentially
c. Radially outward
d. Radially inward

The Correct Answer is option d. Radially inward

Explanation:
Centripetal acceleration always acts toward the center of the circular path.

MCQs No. 11

The expression for centripetal acceleration is:
a. v²/r
b. r/v²
c. vr
d. r²/v

The Correct Answer is option a. v²/r

Explanation:
Centripetal acceleration depends on the square of speed and inversely on radius.

MCQs No. 12

Which force provides centripetal force to a stone tied to a string?
a. Gravity
b. Friction
c. Tension
d. Normal reaction

The Correct Answer is option c. Tension

Explanation:
The tension in the string pulls the stone toward the center.

MCQs No. 13

For a car moving on a level circular road, the centripetal force is provided by:
a. Normal force
b. Gravitational force
c. Frictional force
d. Air resistance

The Correct Answer is option c. Frictional force

Explanation:
Friction between tires and road supplies the necessary centripetal force.

MCQs No. 14

If speed of a particle moving in a circle is doubled, centripetal acceleration becomes:
a. Half
b. Double
c. Four times
d. One fourth

The Correct Answer is option c. Four times

Explanation:
Centripetal acceleration is proportional to the square of velocity.

MCQs No. 15

On a banked road, centripetal force is provided by:
a. Friction only
b. Weight of vehicle
c. Horizontal component of normal force
d. Air resistance

The Correct Answer is option c. Horizontal component of normal force

Explanation:
The horizontal component of the normal reaction provides centripetal force.

MCQs No. 16

The formula for banking angle θ is:
a. tanθ = rg/v²
b. tanθ = v²/rg
c. sinθ = v²/rg
d. cosθ = rg/v²

The Correct Answer is option b. tanθ = v²/rg

Explanation:
This equation relates speed, radius, and gravitational acceleration.

MCQs No. 17

Weightlessness in satellites occurs because:
a. No gravity exists
b. Gravity is very large
c. Satellite and objects fall together
d. Mass becomes zero

The Correct Answer is option c. Satellite and objects fall together

Explanation:
Both satellite and objects inside experience the same gravitational acceleration.

MCQs No. 18

Orbital velocity of a satellite depends on:
a. Mass of satellite
b. Radius of orbit
c. Shape of satellite
d. Atmospheric pressure

The Correct Answer is option b. Radius of orbit

Explanation:
Orbital velocity depends on distance from the center of Earth.

MCQs No. 19

Geostationary satellites revolve around Earth in:
a. 12 hours
b. 18 hours
c. 24 hours
d. 48 hours

The Correct Answer is option c. 24 hours

Explanation:
Their time period matches Earth’s rotation.

MCQs No. 20

Geostationary satellites are placed above the:
a. Poles
b. Tropic of Cancer
c. Equator
d. Arctic Circle

The Correct Answer is option c. Equator

Explanation:
This allows them to remain fixed relative to a point on Earth.

MCQs No. 21

Moment of inertia depends upon:
a. Mass only
b. Shape only
c. Axis of rotation
d. All of these

The Correct Answer is option d. All of these

Explanation:
Moment of inertia depends on mass, shape, and distribution of mass about the axis.

MCQs No. 22

SI unit of moment of inertia is:
a. kg m
b. kg m²
c. N m
d. J s

The Correct Answer is option b. kg m²

Explanation:
Moment of inertia is the rotational analog of mass.

MCQs No. 23

Angular momentum is defined as:
a. Iω
b. τ/I
c. r × F
d. ω/α

The Correct Answer is option a. Iω

Explanation:
Angular momentum is the product of moment of inertia and angular velocity.

MCQs No. 24

The rate of change of angular momentum is equal to:
a. Force
b. Torque
c. Power
d. Energy

The Correct Answer is option b. Torque

Explanation:
Torque is the rotational equivalent of force.

MCQs No. 25

Which law explains why a spinning skater pulls in arms to spin faster?
a. Newton’s first law
b. Law of inertia
c. Conservation of angular momentum
d. Conservation of energy

The Correct Answer is option c. Conservation of angular momentum

Explanation:
Reducing moment of inertia increases angular velocity to keep angular momentum constant.

MCQs No. 26

Artificial gravity in space stations is created by:
a. Increasing mass
b. Increasing speed
c. Rotational motion
d. Magnetic force

The Correct Answer is option c. Rotational motion

Explanation:
Rotation produces centripetal acceleration that mimics gravity.

MCQs No. 27

Torque is defined as the product of:
a. Force and mass
b. Force and velocity
c. Force and perpendicular distance
d. Force and time

The Correct Answer is option c. Force and perpendicular distance

Explanation:
Torque measures the turning effect of a force.

MCQs No. 28

SI unit of torque is:
a. Joule
b. Newton
c. Newton meter
d. Watt

The Correct Answer is option c. Newton meter

Explanation:
Torque is measured as force multiplied by distance.

MCQs No. 29

Angular acceleration is produced by:
a. Force
b. Energy
c. Torque
d. Momentum

The Correct Answer is option c. Torque

Explanation:
Torque causes change in angular velocity.

MCQs No. 30

For a rigid body, the equation τ = Iα is analogous to:
a. v = u + at
b. F = ma
c. p = mv
d. W = Fs

The Correct Answer is option b. F = ma

Explanation:
This is Newton’s second law in rotational form.

MCQs No. 31

If the radius of circular path is doubled keeping speed constant, centripetal acceleration becomes:
a. Double
b. Half
c. Four times
d. One fourth

The Correct Answer is option b. Half

Explanation:
Centripetal acceleration is inversely proportional to radius, $a_c = \frac{v^2}{r}$ .

MCQs No. 32

Which quantity changes continuously in uniform circular motion?
a. Speed
b. Velocity
c. Radius
d. Mass

The Correct Answer is option b. Velocity

Explanation:
Velocity changes because its direction changes continuously.

MCQs No. 33

Angular velocity is a:
a. Scalar quantity
b. Vector quantity
c. Tensor quantity
d. Dimensionless quantity

The Correct Answer is option b. Vector quantity

Explanation:
Angular velocity has both magnitude and direction given by right-hand rule.

MCQs No. 34

The direction of angular velocity vector is given by:
a. Fleming’s rule
b. Left-hand thumb rule
c. Right-hand thumb rule
d. Maxwell’s rule

The Correct Answer is option c. Right-hand thumb rule

Explanation:
Curling fingers in direction of rotation gives thumb direction of angular velocity.

MCQs No. 35

Which motion has zero angular acceleration?
a. Non-uniform circular motion
b. Rotational motion
c. Uniform circular motion
d. Oscillatory motion

The Correct Answer is option c. Uniform circular motion

Explanation:
Angular velocity remains constant in uniform circular motion.

MCQs No. 36

The centripetal force on a satellite is provided by:
a. Air resistance
b. Normal force
c. Tension
d. Gravitational force

The Correct Answer is option d. Gravitational force

Explanation:
Earth’s gravity keeps the satellite in circular orbit.

MCQs No. 37

If mass of a body in circular motion is doubled, centripetal force becomes:
a. Half
b. Double
c. Four times
d. Same

The Correct Answer is option b. Double

Explanation:
Centripetal force is directly proportional to mass.

MCQs No. 38

Which force acts perpendicular to velocity in circular motion?
a. Friction
b. Tangential force
c. Centripetal force
d. Weight

The Correct Answer is option c. Centripetal force

Explanation:
Centripetal force acts radially inward, perpendicular to velocity.

MCQs No. 39

On a smooth banked road, friction is:
a. Maximum
b. Minimum
c. Zero
d. Infinite

The Correct Answer is option c. Zero

Explanation:
Normal force alone provides centripetal force.

MCQs No. 40

If a vehicle travels faster than design speed on a banked road, it will:
a. Move inward
b. Move outward
c. Stop
d. Fall vertically

The Correct Answer is option b. Move outward

Explanation:
Excess speed increases required centripetal force.

MCQs No. 41

Orbital velocity of a satellite is independent of:
a. Mass of Earth
b. Radius of orbit
c. Gravitational constant
d. Mass of satellite

The Correct Answer is option d. Mass of satellite

Explanation:
Orbital velocity does not depend on satellite mass.

MCQs No. 42

The value of orbital velocity decreases when:
a. Radius increases
b. Radius decreases
c. Mass increases
d. Gravity increases

The Correct Answer is option a. Radius increases

Explanation:
Orbital velocity varies inversely with square root of radius.

MCQs No. 43

Which satellite remains stationary relative to Earth?
a. Polar satellite
b. Weather satellite
c. Geostationary satellite
d. Space station

The Correct Answer is option c. Geostationary satellite

Explanation:
Its period equals Earth’s rotation period.

MCQs No. 44

Weightlessness in satellites means:
a. No gravity
b. No mass
c. No force
d. No normal reaction

The Correct Answer is option d. No normal reaction

Explanation:
Objects are freely falling with the satellite.

MCQs No. 45

Artificial gravity is experienced due to:
a. Gravity
b. Magnetism
c. Centripetal acceleration
d. Friction

The Correct Answer is option c. Centripetal acceleration

Explanation:
Rotation creates an effect similar to gravity.

MCQs No. 46

Moment of inertia of a body is minimum when axis passes through:
a. Edge
b. Center of mass
c. Surface
d. Any point

The Correct Answer is option b. Center of mass

Explanation:
Mass distribution is closest to axis.

MCQs No. 47

Moment of inertia is rotational analogue of:
a. Force
b. Velocity
c. Mass
d. Momentum

The Correct Answer is option c. Mass

Explanation:
Both resist change in motion.

MCQs No. 48

Angular momentum depends upon:
a. Mass only
b. Velocity only
c. Moment of inertia and angular velocity
d. Force and distance

The Correct Answer is option c. Moment of inertia and angular velocity

Explanation:
$L = I\omega$

MCQs No. 49

Which quantity remains conserved when no external torque acts?
a. Energy
b. Momentum
c. Angular momentum
d. Force

The Correct Answer is option c. Angular momentum

Explanation:
Angular momentum is conserved in isolated systems.

MCQs No. 50

SI unit of angular momentum is:
a. kg m²
b. kg m² s⁻¹
c. N m
d. J

The Correct Answer is option b. kg m² s⁻¹

Explanation:
Angular momentum = moment of inertia × angular velocity.

MCQs No. 51

Torque is zero when force passes through:
a. Edge
b. Axis
c. Center of mass
d. Surface

The Correct Answer is option b. Axis

Explanation:
Perpendicular distance becomes zero.

MCQs No. 52

Increasing radius of rotation increases moment of inertia:
a. Linearly
b. Quadratically
c. Inversely
d. Randomly

The Correct Answer is option b. Quadratically

Explanation:
Moment of inertia depends on square of distance.

MCQs No. 53

Which factor does NOT affect moment of inertia?
a. Mass
b. Shape
c. Speed of rotation
d. Axis of rotation

The Correct Answer is option c. Speed of rotation

Explanation:
Moment of inertia depends on mass distribution only.

MCQs No. 54

Angular acceleration is zero when:
a. Torque is zero
b. Velocity is zero
c. Mass is zero
d. Radius is zero

The Correct Answer is option a. Torque is zero

Explanation:
Torque causes angular acceleration.

MCQs No. 55

Which quantity is maximum at rim of rotating disc?
a. Angular velocity
b. Angular acceleration
c. Linear velocity
d. Moment of inertia

The Correct Answer is option c. Linear velocity

Explanation:
Linear velocity increases with radius.

MCQs No. 56

For a given torque, angular acceleration is:
a. Directly proportional to moment of inertia
b. Inversely proportional to moment of inertia
c. Independent of moment of inertia
d. Equal to force

The Correct Answer is option b. Inversely proportional to moment of inertia

Explanation:
From τ = Iα.

MCQs No. 57

A diver pulls in arms during dive to:
a. Reduce force
b. Increase torque
c. Increase angular speed
d. Increase mass

The Correct Answer is option c. Increase angular speed

Explanation:
Moment of inertia decreases, angular speed increases.

MCQs No. 58

Which example demonstrates conservation of angular momentum?
a. Falling body
b. Rotating skater
c. Linear collision
d. Projectile motion

The Correct Answer is option b. Rotating skater

Explanation:
Pulling arms inward increases rotation speed.

MCQs No. 59

If moment of inertia decreases, angular velocity:
a. Decreases
b. Becomes zero
c. Remains constant
d. Increases

The Correct Answer is option d. Increases

Explanation:
To conserve angular momentum.

MCQs No. 60

Which body has maximum moment of inertia for same mass and radius?
a. Solid disc
b. Solid sphere
c. Ring
d. Rod

The Correct Answer is option c. Ring

Explanation:
All mass lies farthest from axis.

MCQs No. 61

The angular displacement corresponding to one complete revolution is:
a. π rad
b. 2π rad
c. π/2 rad
d. 1 rad

The Correct Answer is option b. 2π rad

Explanation:
One full rotation corresponds to an angle of 360°, which equals 2π radians.

MCQs No. 62

If a body rotates with constant angular velocity, its angular acceleration is:
a. Zero
b. Maximum
c. Variable
d. Infinite

The Correct Answer is option a. Zero

Explanation:
Angular acceleration is the rate of change of angular velocity.

MCQs No. 63

The relation between linear acceleration and angular acceleration is:
a. a = α/r
b. a = rα
c. a = r²α
d. a = αr²

The Correct Answer is option b. a = rα

Explanation:
Linear (tangential) acceleration is directly proportional to angular acceleration.

MCQs No. 64

Which quantity is same for all particles of a rotating rigid body?
a. Linear velocity
b. Linear acceleration
c. Angular velocity
d. Tangential velocity

The Correct Answer is option c. Angular velocity

Explanation:
All points in a rigid body rotate with the same angular velocity.

MCQs No. 65

Centripetal force does no work because it acts:
a. Along displacement
b. Opposite to displacement
c. Perpendicular to displacement
d. Parallel to velocity

The Correct Answer is option c. Perpendicular to displacement

Explanation:
Work done is zero when force is perpendicular to displacement.

MCQs No. 66

The direction of centripetal force is:
a. Tangential
b. Radially outward
c. Radially inward
d. Vertical

The Correct Answer is option c. Radially inward

Explanation:
It always acts toward the centre of circular path.

MCQs No. 67

If radius of circular path becomes half, centripetal force becomes:
a. Half
b. Double
c. Four times
d. Eight times

The Correct Answer is option b. Double

Explanation:
Centripetal force is inversely proportional to radius.

MCQs No. 68

For a vehicle on a level circular road, maximum speed depends on:
a. Mass of vehicle
b. Radius only
c. Coefficient of friction and radius
d. Engine power

The Correct Answer is option c. Coefficient of friction and radius

Explanation:
Friction provides centripetal force.

MCQs No. 69

Which force provides centripetal force to the moon around Earth?
a. Tension
b. Normal force
c. Friction
d. Gravitational force

The Correct Answer is option d. Gravitational force

Explanation:
Earth’s gravity keeps the moon in orbit.

MCQs No. 70

The orbital velocity of a satellite near Earth is approximately:
a. 2 km/s
b. 4 km/s
c. 8 km/s
d. 11 km/s

The Correct Answer is option c. 8 km/s

Explanation:
Low Earth orbit satellites move at about 7.9 km/s.

MCQs No. 71

If gravitational force suddenly disappears, a satellite will:
a. Fall vertically
b. Move in circular path
c. Move in straight line
d. Stop immediately

The Correct Answer is option c. Move in straight line

Explanation:
Without centripetal force, motion becomes linear due to inertia.

MCQs No. 72

The time period of a geostationary satellite is equal to:
a. 12 hours
b. 18 hours
c. 24 hours
d. 36 hours

The Correct Answer is option c. 24 hours

Explanation:
It matches Earth’s rotation period.

MCQs No. 73

Communication satellites are placed at an altitude of about:
a. 500 km
b. 1000 km
c. 36000 km
d. 100000 km

The Correct Answer is option c. 36000 km

Explanation:
Geostationary orbit lies about 36,000 km above Earth.

MCQs No. 74

Which satellite is used for weather monitoring?
a. Navigation satellite
b. Communication satellite
c. Remote sensing satellite
d. Spy satellite

The Correct Answer is option c. Remote sensing satellite

Explanation:
They observe Earth’s atmosphere and surface.

MCQs No. 75

Moment of inertia of a body depends on:
a. Speed of rotation
b. Distribution of mass
c. Time
d. Force applied

The Correct Answer is option b. Distribution of mass

Explanation:
Mass distribution relative to axis determines moment of inertia.

MCQs No. 76

Moment of inertia of a thin ring about its center is:
a. MR²
b. ½MR²
c. ⅔MR²
d. 2MR²

The Correct Answer is option a. MR²

Explanation:
All mass lies at distance R from axis.

MCQs No. 77

Moment of inertia of a solid disc about its center is:
a. MR²
b. ½MR²
c. ⅓MR²
d. ¼MR²

The Correct Answer is option b. ½MR²

Explanation:
Standard result for a uniform solid disc.

MCQs No. 78

Moment of inertia of a solid sphere about its diameter is:
a. MR²
b. ½MR²
c. ⅖MR²
d. ⅔MR²

The Correct Answer is option c. ⅖MR²

Explanation:
Mass is distributed throughout volume.

MCQs No. 79

Moment of inertia of a rod about its centre is:
a. ML²
b. ½ML²
c. ⅓ML²
d. 1/12 ML²

The Correct Answer is option d. 1/12 ML²

Explanation:
Standard formula for uniform rod.

MCQs No. 80

Which of the following increases torque?
a. Decreasing force
b. Decreasing lever arm
c. Increasing perpendicular distance
d. Decreasing angle

The Correct Answer is option c. Increasing perpendicular distance

Explanation:
Torque depends on perpendicular distance from axis.

MCQs No. 81

Angular momentum of a rotating body becomes zero when:
a. ω = 0
b. I = 0
c. τ = 0
d. r = 0

The Correct Answer is option a. ω = 0

Explanation:
Angular momentum is product of I and ω.

MCQs No. 82

A planet moves faster when it is:
a. Far from sun
b. Close to sun
c. At poles
d. At equator

The Correct Answer is option b. Close to sun

Explanation:
Conservation of angular momentum.

MCQs No. 83

Which quantity remains constant for a satellite in circular orbit?
a. Velocity
b. Speed
c. Acceleration
d. Force

The Correct Answer is option b. Speed

Explanation:
Magnitude of velocity remains constant.

MCQs No. 84

In circular motion, work done by centripetal force is:
a. Maximum
b. Minimum
c. Zero
d. Infinite

The Correct Answer is option c. Zero

Explanation:
Force is perpendicular to displacement.

MCQs No. 85

The angular speed of Earth about its axis is approximately:
a. 7.27 × 10⁻⁵ rad/s
b. 3.14 rad/s
c. 1 rad/s
d. 10⁻² rad/s

The Correct Answer is option a. 7.27 × 10⁻⁵ rad/s

Explanation:
Earth completes one rotation in 24 hours.

MCQs No. 86

If torque acting on a body is doubled, angular acceleration becomes:
a. Half
b. Double
c. Four times
d. Zero

The Correct Answer is option b. Double

Explanation:
Angular acceleration is directly proportional to torque.

MCQs No. 87

Which statement is true about angular momentum?
a. Always conserved
b. Conserved only with no external torque
c. Depends only on mass
d. Scalar quantity

The Correct Answer is option b. Conserved only with no external torque

Explanation:
External torque changes angular momentum.

MCQs No. 88

The unit of torque and work are same but they differ in:
a. Value
b. Direction
c. Nature
d. Formula

The Correct Answer is option c. Nature

Explanation:
Torque is vector, work is scalar.

MCQs No. 89

Which quantity is conserved in circular motion?
a. Velocity
b. Linear momentum
c. Angular momentum
d. Acceleration

The Correct Answer is option c. Angular momentum

Explanation:
When no external torque acts.

MCQs No. 90

The force responsible for artificial gravity is:
a. Gravitational
b. Magnetic
c. Centripetal
d. Electrostatic

The Correct Answer is option c. Centripetal

Explanation:
Rotation produces centripetal acceleration.

MCQs No. 91

The magnitude of angular momentum is maximum when:
a. ω is minimum
b. I is minimum
c. I and ω both are maximum
d. τ is zero

The Correct Answer is option c. I and ω both are maximum

Explanation:
Angular momentum depends on both.

MCQs No. 92

A flywheel stores energy in the form of:
a. Linear kinetic energy
b. Gravitational energy
c. Rotational kinetic energy
d. Heat energy

The Correct Answer is option c. Rotational kinetic energy

Explanation:
Flywheels rotate at high speed.

MCQs No. 93

If no external torque acts, angular momentum:
a. Increases
b. Decreases
c. Remains constant
d. Becomes zero

The Correct Answer is option c. Remains constant

Explanation:
Law of conservation of angular momentum.

MCQs No. 94

Which factor increases angular momentum of Earth?
a. Decrease in radius
b. Increase in mass
c. Increase in angular speed
d. All of these

The Correct Answer is option d. All of these

Explanation:
Angular momentum depends on I and ω.

MCQs No. 95

The value of moment of inertia of a body is maximum when:
a. Axis passes through centre
b. Axis passes through edge
c. Mass is concentrated near axis
d. Mass is concentrated far from axis

The Correct Answer is option d. Mass is concentrated far from axis

Explanation:
Distance squared increases moment of inertia.

MCQs No. 96

A spinning top remains upright due to:
a. Gravity
b. Friction
c. Angular momentum
d. Torque

The Correct Answer is option c. Angular momentum

Explanation:
Angular momentum resists change in orientation.

MCQs No. 97

Which motion best explains artificial gravity?
a. Linear motion
b. Oscillatory motion
c. Circular motion
d. Random motion

The Correct Answer is option c. Circular motion

Explanation:
Centripetal acceleration mimics gravity.

MCQs No. 98

The tangential acceleration in circular motion is due to:
a. Centripetal force
b. Radial force
c. Tangential force
d. Normal force

The Correct Answer is option c. Tangential force

Explanation:
Tangential force changes speed.

MCQs No. 99

If angular velocity becomes zero, the body will:
a. Translate
b. Stop rotating
c. Move in circle
d. Accelerate

The Correct Answer is option b. Stop rotating

Explanation:
Angular velocity describes rate of rotation.

MCQs No. 100

The moment of inertia of a uniform rod about axis through centre perpendicular to length:
a. 1/12 ML²
b. 1/2 ML²
c. 2/3 ML²
d. ML²
The Correct Answer is option a. 1/12 ML²
Explanation:
Standard formula for uniform rod about centre.