Physics Questions

Q:

If the resistance of a conductor is reduced to half its initial value, then the heating effect in the conductor will become ___.

A) half B) double
C) one-fourth D) four-times
 
Answer & Explanation Answer: A) half

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Q:

Pressure is measured in terms of

A) Mass & Density B) Work done
C) Force and Area D) Force and Distance
 
Answer & Explanation Answer: C) Force and Area

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Q:

If an object moves in a circular path with uniform ________, its motion is called uniform circular motion.

A) speed B) Time
C) Velocity D) Acceleration
 
Answer & Explanation Answer: A) speed

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Q:

What is the SI unit of pressure?

A) Newton B) Weber
C) Pascal D) Henry
 
Answer & Explanation Answer: C) Pascal

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Q:

Which of the following is a renewable source of energy?

A) Coal B) Petroleum
C) Plant D) Natural Gas
 
Answer & Explanation Answer: C) Plant

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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:

Why metals conduct electricity?

A) Because of low melting point B) Because of high tensile strength
C) Because of free electrons D) Because of high atomic density
 
Answer & Explanation Answer: C) Because of free electrons

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Q:

The atomic bomb is based on the principle of

A) Uncontrolled nuclear fusion B) Uncontrolled nuclear fission
C) Controlled nuclear fission D) Controlled nuclear fusion
 
Answer & Explanation Answer: B) Uncontrolled nuclear fission

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