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.

681.

In the diagram shown, If the south-poles of two magnets stroke a steel bar, the polarities at T and V will respectively be

A.

north and south

B.

south and south

C.

north and north

D.

south and north

Correct answer is C

No explanation has been provided for this answer.

682.

Musical instruments playing the same note can be distinguished from one another owing to the difference in their

A.

quality

B.

pitch

C.

intensity

D.

loudness

Correct answer is A

Sound "quality" or "timbre" describes those characteristics of sound which allow the ear to distinguish sounds which have the same pitch and loudness

683.

Convex mirrors are used as driving mirrors because images formed are

A.

erect, Virtual and diminished

B.

erect, real and diminished

C.

erect, virtual and magnified

D.

inverted, virtual and diminished

Correct answer is A

No explanation has been provided for this answer.

684.

The differences observed in solids, liquids and gases may be accounted for by

A.

their relative masses

B.

their melting points

C.

the spacing and forces acting between the molecules

D.

the different molecules in each of them

Correct answer is C

No explanation has been provided for this answer.

685.

The process whereby a liquid turns spontaneously into vapour is called

A.

regelation

B.

evaporation

C.

boiling

D.

sublimation

Correct answer is B

No explanation has been provided for this answer.