If a particle moves in a circle describing equal angles in equal times, its velocity vector

(1) Remains constant

(2) Changes in magnitude

(3) Changes in direction

(4) Changes both in magnitude and direction

Subtopic:  Circular Motion |
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NEET 2022 - Target Batch - Aryan Raj Singh

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A motor cyclist going round in a circular track at constant speed has

(1) Constant linear velocity

(2) Constant acceleration

(3) Constant angular velocity

(4) Constant force

Subtopic:  Circular Motion |
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NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

A particle P is moving in a circle of radius ‘a’ with a uniform speed v. C is the centre of the circle and AB is a diameter. When passing through B the angular velocity of P about A and C are in the ratio

(1) 1 : 1

(2) 1 : 2

(3) 2 : 1

(4) 4 : 1

Subtopic:  Circular Motion |
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NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

A particle moves with constant angular velocity in a circle. During the motion its

(1) Energy is conserved

(2) Momentum is conserved

(3) Energy and momentum both are conserved

(4) None of the above is conserved

Subtopic:  Circular Motion |
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NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

Two bodies of mass 10 kg and 5 kg moving in concentric orbits of radii R and r such that their periods are the same. Then the ratio between their centripetal acceleration is

(1) R/r

(2) r/R

(3) R2/r2

(4) r2/R2

Subtopic:  Circular Motion |
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NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

A particle is moving in a horizontal circle with constant speed. It has constant

(1) Velocity

(2) Acceleration

(3) Kinetic energy

(4) Displacement

Subtopic:  Circular Motion |
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NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

The angular speed of a fly wheel making 120 revolutions/minute is

(1) $2\pi \text{\hspace{0.17em}\hspace{0.17em}}rad/s$

(2) $4{\pi }^{2}\text{\hspace{0.17em}\hspace{0.17em}}rad/s$

(3) $\pi \text{\hspace{0.17em}\hspace{0.17em}}rad/s$

(4) $4\pi \text{\hspace{0.17em}\hspace{0.17em}}rad/s$

Subtopic:  Circular Motion |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

Certain neutron stars are believed to be rotating at about 1 rev/sec. If such a star has a radius of 20 km, the acceleration of an object on the equator of the star will be

(1) $20×{10}^{8}m/{\mathrm{sec}}^{2}$

(2) $8×{10}^{5}m/{\mathrm{sec}}^{2}$

(3) $120×{10}^{5}m/{\mathrm{sec}}^{2}$

(4) $4×{10}^{8}m/{\mathrm{sec}}^{2}$

Subtopic:  Circular Motion |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

An electric fan has blades of length 30 cm as measured from the axis of rotation. If the fan is rotating at 1200 r.p.m, the acceleration of a point on the tip of the blade is about

(1) 1600 m/sec2

(2) 4740 m/sec2

(3) 2370 m/sec2

(4) 5055 m/sec2

Subtopic:  Circular Motion |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:

The angular speed of seconds needle in a mechanical watch is

(1) $\frac{\pi }{30}$ rad/s

(4) $\frac{60}{\pi }$ rad/s