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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.

121.

The gravitational pull on the moon is 16 that of the earth. If a body weighs 6.0 N on the moon, what will be the weight on the earth?

A.

6.0 N

B.

5.0 N

C.

12.0 N

D.

36.0 N

Correct answer is D

A person would weigh six times less on the moon than they do on Earth.

OR

A person would weigh six times more on the earth than they do on moon.

 

16ofx = 6.0N on the moon

x = 6 * 6 = 36 

 

122.

The eclipse of the moon occurs when?

A.

the moon reflects the rays from the sun to the earth

B.

the moon comes exactly between the earth and the sun

C.

the earth comes exactly between the moon and the sun

D.

the sun comes exactly between the earth and the moon

Correct answer is C

Eclipse of the moon occurs when the earth comes between the sun and the moon. 

123.

In order to view the sun, the most suitable instrument to use is?

A.

helioscope

B.

telescope

C.

stroboscope

D.

sun meter

Correct answer is A

A helioscope is an instrument used for observing the sun and sunspots.

The helioscope was first used by Benedetto Castelli and refined by Galileo Galilei.

124.

Which component of fiber-optic connector has a provision of entry for the fibre along with the fixation to connector housing?

A.

coupling device

B.

cable

C.

ferrule

D.

connector housing

Correct answer is A

Fiber optic couplers are used to split the input signals into two or more outputs, they are called splitters in this case.

On the other hand, some types of couplers can be used to combine two or more inputs into one single output, they are called combiners in this case.

125.

In the formation of sea breeze, wind blows from?

A.

sky to land

B.

sea to sky

C.

land to sea

D.

sea to land

Correct answer is D

A sea breeze describes a wind that blows from the ocean inland towards land.

This breeze occurs most often in the spring and summer months because of the greater temperature differences between the ocean and nearby land, particularly in the afternoon when the land is at maximum heating from the sun.