Welcome to the **Angular Velocity MDCAT** MCQs with Answers. In this post, we have shared **Angular Velocity** Multiple Choice Questions and Answers for **PMC MDCAT 2024**. Each question in MDCAT Physics offers a chance to enhance your knowledge regarding **Angular Velocity** MCQs in this MDCAT Online Test.

## Angular Velocity MDCAT MCQs Test Preparations

What is the SI unit of angular velocity?

a) radian per meter

b) meter per second

c) radian per second

d) degree per second

Which physical quantity is directly proportional to angular velocity?

a) Linear velocity

b) Force

c) Mass

d) Kinetic energy

What is the relationship between angular velocity (ω) and period (T) of a rotating object?

a) ω = 2πT

b) ω = T/2π

c) ω = 2π/T

d) ω = 1/T

In a uniform circular motion, the angular velocity is:

a) Constant

b) Zero

c) Increasing

d) Decreasing

The vector nature of angular velocity indicates that it has both:

a) Magnitude and direction

b) Mass and acceleration

c) Speed and position

d) Force and displacement

If a wheel rotates with an angular velocity of 4 rad/s, what is its angular displacement after 3 seconds?

a) 12 radians

b) 4 radians

c) 3 radians

d) 1.5 radians

Angular velocity can be represented as the rate of change of:

a) Linear velocity

b) Angular displacement

c) Centripetal force

d) Kinetic energy

A disk rotates at a constant angular velocity of 6 rad/s. What is the period of rotation?

a) 1/6 s

b) 6 s

c) π/3 s

d) 2π/6 s

The direction of angular velocity vector is given by:

a) Right-hand rule

b) Left-hand rule

c) Newton’s third law

d) Lenz’s law

For an object in circular motion, if the radius is doubled and the linear speed remains constant, the angular velocity will:

a) Double

b) Halve

c) Stay the same

d) Quadruple

The angular velocity of a wheel rotating at 180°/s in radians per second is:

a) π/2 rad/s

b) π rad/s

c) 3π/2 rad/s

d) 2π rad/s

If the angular velocity vector points upwards, the object is rotating:

a) Clockwise when viewed from above

b) Counterclockwise when viewed from above

c) In a plane perpendicular to the vector

d) Randomly

A point on the edge of a rotating disk with radius 0.5 m has a linear velocity of 2 m/s. What is the angular velocity?

a) 2 rad/s

b) 4 rad/s

c) 8 rad/s

d) 16 rad/s

If the angular velocity of an object is 5 rad/s, how many revolutions does it complete in 2 seconds?

a) 2

b) 5

c) 10

d) 20

The angular velocity of a fan blade decreases uniformly from 10 rad/s to 5 rad/s in 5 seconds. What is its angular acceleration?

a) -1 rad/s²

b) -0.5 rad/s²

c) 1 rad/s²

d) 0.5 rad/s²

Which of the following is NOT a factor affecting angular velocity?

a) Radius of rotation

b) Moment of inertia

c) Mass of the object

d) Temperature

In simple harmonic motion, the angular velocity is also known as the:

a) Phase constant

b) Natural frequency

c) Displacement

d) Damping factor

An object rotates with an angular velocity of 3 rad/s for 4 seconds. What is the angular displacement?

a) 12 radians

b) 7 radians

c) 3 radians

d) 1.5 radians

Which of the following quantities is vectorial?

a) Angular speed

b) Angular velocity

c) Angular frequency

d) Angular displacement

A rigid body rotates with a constant angular velocity. What is the angular acceleration?

a) Positive

b) Negative

c) Zero

d) Variable

If the frequency of rotation of a disk is doubled, the angular velocity will:

a) Double

b) Halve

c) Stay the same

d) Quadruple

A disk rotates with an angular velocity of 10 rad/s and a radius of 0.5 m. What is the linear velocity at the edge of the disk?

a) 2.5 m/s

b) 5 m/s

c) 10 m/s

d) 20 m/s

In rotational motion, which of the following quantities is conserved if no external torque acts on the system?

a) Angular velocity

b) Angular displacement

c) Angular momentum

d) Linear velocity

An object moves in a circle with a constant speed. Its angular velocity is:

a) Changing

b) Constant

c) Zero

d) Increasing

A point on a rotating wheel has an angular velocity of 5 rad/s. What is the frequency of rotation in Hz?

a) 0.8 Hz

b) 1.25 Hz

c) 5 Hz

d) 10 Hz

What is the angular velocity of a point on the Earth’s surface at the equator due to Earth’s rotation?

a) 7.27 x 10⁻⁵ rad/s

b) 7.27 x 10⁻⁴ rad/s

c) 1 rad/s

d) 2π rad/s

Angular velocity is a measure of how quickly an object changes its:

a) Linear displacement

b) Position

c) Angular position

d) Momentum

If the moment of inertia of a rotating object increases, what happens to the angular velocity, assuming angular momentum is conserved?

a) Increases

b) Decreases

c) Remains the same

d) Becomes zero

Which of the following correctly describes the relationship between linear velocity (v) and angular velocity (ω)?

a) v = ωr

b) v = ω/r

c) v = r/ω

d) v = ω^2r

A satellite orbits a planet at a constant distance. The satellite’s angular velocity is:

a) Constant

b) Increasing

c) Decreasing

d) Zero

In a uniform circular motion, the linear velocity vector is always:

a) Tangential to the path

b) Perpendicular to the angular velocity vector

c) Parallel to the angular velocity vector

d) Both a and b

The symbol ω is commonly used to represent:

a) Angular displacement

b) Angular velocity

c) Angular momentum

d) Angular acceleration

For an object rotating with a constant angular velocity, the angular displacement over time t is given by:

a) θ = ωt

b) θ = ω/t

c) θ = ω²t

d) θ = ω/t²

Which of the following increases when an object rotates faster?

a) Radius of rotation

b) Angular velocity

c) Moment of inertia

d) Mass of the object

An object has an initial angular velocity of 2 rad/s and an angular acceleration of 0.5 rad/s². What is its angular velocity after 4 seconds?

a) 4 rad/s

b) 2 rad/s

c) 3 rad/s

d) 4.5 rad/s

If the angular velocity of a spinning disk is doubled, what happens to the kinetic energy of the disk?

a) It doubles

b) It quadruples

c) It stays the same

d) It halves

The unit of angular velocity in the CGS system is:

a) radian per second

b) degree per second

c) radian per second squared

d) erg

A point on a rotating disk has an angular velocity of 10 rad/s. If the radius of the disk is 0.2 m, what is the linear velocity of the point?

a) 2 m/s

b) 4 m/s

c) 10 m/s

d) 20 m/s

In a gyroscope, the angular velocity vector aligns with the:

a) Axis of rotation

b) Force vector

c) Velocity vector

d) Acceleration vector

An object completes a circular path with a radius of 1 m in 2π seconds. What is its angular velocity?

a) 0.5 rad/s

b) 1 rad/s

c) 2 rad/s

d) π rad/s

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