999+ Physics Questions Answers Explanation MCQ

Q:

Unit of impedance is ___________.

A) ohm	B) henry
C) tesla	D) hertz

Answer & Explanation Answer: A) ohm

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Q:

How can we measure specific gravity of milk?

A) Using a viscometer	B) Using an odometer
C) Using a hygrometer	D) Using a hydrometer

Answer & Explanation Answer: D) Using a hydrometer

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Q:

Find the acceleration (in m/s2) of a body which accelerates from 10 m/s to 20 m/s in 4 seconds.

A) 7.5	B) 15
C) 5	D) 2.5

Answer & Explanation Answer: D) 2.5

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Q:

The unit of measurement of noise is

A) Decibel	B) Hertz
C) Amplifier	D) Acoustics

Answer & Explanation Answer: A) Decibel

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Q:

The unit of which physical quantity is not pascal?

A) Moment of inertia	B) Pressure
C) Stress	D) Young's modulus

Answer & Explanation Answer: A) Moment of inertia

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Q:

_____ mirror is used in the headlights of cars.

A) Semi-circular	B) Conical
C) Convex	D) Concave

Answer & Explanation Answer: D) Concave

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Q:

What is the SI unit of Power?

A) Boyle	B) Watt
C) Newton	D) Pascal

Answer & Explanation Answer: B) Watt

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Q:

If an object is thrown upwards, what will be its velocity, when it reaches its maximum height?

A) 0 m/s	B) 4.9 m/s
C) 14.7 m/s	D) 20 m/s

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