Physics questions and answers

Physics Questions and Answers

If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.

386.

A body of mass 2 kg is released from a point 100 m above the ground. Calculate its kinetic energy 80m  from the point of release.

A.

1600 J

B.

900 J

C.

600 J

D.

200 J

Correct answer is A

No explanation has been provided for this answer.

387.

Which of the following instruments can be used to compare the magnitudes of charges on two given bodies?

A.

Electrophorus

B.

Ebonite rod

C.

Gold-leaf electroscope

D.

Proof planes

Correct answer is C

No explanation has been provided for this answer.

388.

The induced current in a coil always flows in a direction so as to oppose the change that causes it. This statement is known as

A.

Coulomb's law

B.

Lenz's law

C.

Faraday's law

D.

Ampere's law

Correct answer is B

No explanation has been provided for this answer.

389.

In an elastic collision, momentum is conserved as well as well as?

A.

velocity

B.

kinetic energy

C.

potential energy

D.

speed

Correct answer is B

An elastic collision is an encounter (collision) between two bodies in which the total kinetic energy of the two bodies remains the same.

390.

Which of the following quantities is a vector?

A.

Volume

B.

Momentum

C.

Energy

D.

Speed

Correct answer is B

No explanation has been provided for this answer.