NECO Physics Past Questions & Answers - Page 2

6.

Semiconductor is a class of solid whose conductivity increases with an increase in

A.

Pressure

B.

Temperature

C.

Current

D.

Voltage

Correct answer is B

No explanation has been provided for this answer.

7.

A boy in a barber's shop sits between two parallel mirrors. The number of images observed by him will be

A.

Infinite

B.

Ten

C.

Eight

D.

Forty

Correct answer is A

No explanation has been provided for this answer.

8.

The heat required to raise a mass of a substance through 1K is known as

A.

Specific heat capacity

B.

Specific latent heat of vaporization

C.

Capacity latent heat of fusion

D.

Heat capacity

Correct answer is D

No explanation has been provided for this answer.

9.

The rate of cooling of a heated quantity of liquid in an enclosure depends on the

A.

Pressure of the liquid

B.

Temperature in the enclosure

C.

Pressure of the enclosure

D.

Volume of the liquid

Correct answer is B

No explanation has been provided for this answer.

10.

When an athlete perspires after running, he loses heat through

A.

Evaporation

B.

Conduction

C.

Radiation

D.

Convection

Correct answer is A

No explanation has been provided for this answer.