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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.

3,376.

A ray of light is incident on a body x as shown in the diagram above. What is the refractive index of the body?

A.

1.63

B.

1.50

C.

1.49

D.

1.33

E.

1.02

Correct answer is A

No explanation has been provided for this answer.

3,379.

How much heat is required to convert 20 g of ice at 0oC to water at the same temperature? (Specific latent heat of ice = 336 J g-1)

A.

1.35 x 103J

B.

5.38 x 103J

C.

6.72 x 103J

D.

7.06 x 103J

E.

8.06 x 103J

Correct answer is C

The formula of specific latent heat of fusion is given by: Q = mL

: 20 X 336

= 6720 or 6.72 X 103