Physics Questions

Q:

According to the Second Law of Motion, for a given force, acceleration is inversely proportional to the ____ of an object.

A) density B) volume
C) force D) mass
 
Answer & Explanation Answer: D) mass

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Q:

Electrons move around the nucleus in _______ motion.

A) translatory B) spin
C) orbital D) vibrational
 
Answer & Explanation Answer: C) orbital

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Q:

A body of mass 2 kg is thrown upward with initial velocity of 20 m/s. After 2 seconds, its kinetic energy will be : (g = 10 m/sq.s)

A) 0J B) 200J
C) 400J D) 100J
 
Answer & Explanation Answer: A) 0J

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Q:

What is the unit of the physical quantity, Electrical conductance?

A) lux B) ohm
C) farad D) siemens
 
Answer & Explanation Answer: D) siemens

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Q:

The rate of change of linear momentum of a body is proportional to the ___________ acting on it.

A) impulse B) torque
C) force D) kinetic energy
 
Answer & Explanation Answer: C) force

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Q:

What is the SI unit of electric current?

A) Newton B) Joule
C) Ampere D) Watt
 
Answer & Explanation Answer: C) Ampere

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Q:

An example of longitudinal waves (in gas as a medium) is ______.

A) heat waves B) radio waves
C) electromagnetic waves D) sound waves
 
Answer & Explanation Answer: D) sound waves

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Q:

The ratio of change in velocity of a body to the total time taken by it is its __________________.

A) acceleration B) displacement
C) force D) momentum
 
Answer & Explanation Answer: A) acceleration

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