An object moving with uniform circular motion has MCQ with Answer and Explanation

Question Report Error

An object moving with uniform circular motion has

A. Constant speed

B. Constant displacement

C. Constant velocity

D. Constant acceleration

Answer: Option A

Solution (By JKExamLibrary)

Speed constant, velocity and acceleration (centripetal) change direction. KE constant.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1 Report Error

A convex mirror of focal length f forms an image of a distant object. The image is

A. Real, erect, enlarged

B. Virtual, inverted, enlarged

C. Virtual, erect, diminished

D. Real, inverted, diminished

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Correct Answer: Option C

Explanation:
Convex mirror diverges light, forms virtual, erect, diminished image behind mirror for any object position. Focal length positive by sign convention but image always virtual (upright). Used in rear-view mirrors.

This question belongs to: Science Physics

Question #2 Report Error

The Curie temperature is the temperature above which

A. Resistance becomes zero

B. Semiconductor becomes conductor

C. A material becomes superconducting

D. A magnet loses its magnetism

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Correct Answer: Option D

Explanation:
Curie point: ferromagnetic to paramagnetic transition.

This question belongs to: Science Physics

Question #3 Report Error

Fleming's left hand rule gives direction of

A. Induced current

B. Force on current-carrying conductor in magnetic field

C. Induced emf

D. Magnetic field due to current

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Correct Answer: Option B

Explanation:
Left hand rule for motor effect (force). Right hand for generator.

This question belongs to: Science Physics

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