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.

2,006.

A piece of metal of relative density 5.0 weighs 60N in air. Calculate its weight when fully immersed in water

A.

4N

B.

5N

C.

48N

D.

60N

Correct answer is C

R.D = \(\frac{m}{m - m_2} = 5 = \frac{60}{60 - m_1} = \frac{240}{5} = 48N\)

2,007.

A tuber of cassava can be processed into powder. This explains the fact that

A.

matter can change sponteneously from one state to another

B.

matter cannot be destroyed

C.

force is required to change matter from one state to another

D.

matter is made up of tiny particles

Correct answer is D

No explanation has been provided for this answer.

2,009.

Which of the following materials is used to control the rate of neutron production in a nuclear reactor?

A.

boron rods

B.

concrete shield

C.

graphite rods

D.

uranium rods

Correct answer is A

No explanation has been provided for this answer.

2,010.

Which of the following is usually used to cause fission in an atomic reactor?

A.

Alpha particles

B.

beta particles

C.

electrons

D.

Neutrons

Correct answer is D

No explanation has been provided for this answer.