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.

4,296.

Light year is a unit of

A.

time

B.

distance

C.

light

D.

intensity of light

Correct answer is B

No explanation has been provided for this answer.

4,297.

Nuclear sizes are expressed in a unit named

A.

Fermi

B.

angstrom

C.

newton

D.

tesla

Correct answer is A

Fermi - A unit of length equal to 10-15 meter (one femtometer), used in nuclear physics. It is similar to the diameter of a proton.

4,298.

Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to

A.

the heating effect of current alone

B.

hysteresis loss alone

C.

both the heating effect of current and hysteresis loss

D.

intense sunlight at noon

Correct answer is C

No explanation has been provided for this answer.

4,299.

Siphon will fail to work if

A.

the densities of the liquid in the two vessels are equal

B.

the level of the liquid in the two vessels are at the same height

C.

both its limbs are of unequal length

D.

the temperature of the liquids in the two vessels are the same

Correct answer is B

No explanation has been provided for this answer.

4,300.

The absorption of ink by blotting paper involves

A.

viscosity of ink

B.

capillary action phenomenon

C.

diffusion of ink through the blotting

D.

siphon action

Correct answer is B

No explanation has been provided for this answer.