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.

4,177.
4,178.

I. Coherence
II. Same frequency
III. Same wavelength
IV. Same Intensity

Which of the conditions above are necessary to produce interference fringes?

A.

I and III

B.

I, II and IV

C.

I, II and III

D.

II and III

Correct answer is C

No explanation has been provided for this answer.

4,179.

A quantity of water at 0°C is heated to about 30°C. At each degree rise in temperature, its density will

A.

rise steadily

B.

fall steadily

C.

fall then rise

D.

rise then fall

Correct answer is D

No explanation has been provided for this answer.

4,180.

Total internal reflection occurs when light moves from?

A.

a dense medium to a less dense medium

B.

air to water

C.

water to glass

D.

a less dense to a dense medium

Correct answer is A

No explanation has been provided for this answer.