Physics questions and answers For UPSC | SSC | Rail | RRB | State PSC | neet P29

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Page 29

80040281. In a rechargeable cell what kind of energy is stored within the cell?

A

Electrical energy

B

Potential energy

C

Chemical energy

D

Kinetic energy

C

Correct Answer: C. Chemical energy

80005282. A circular plate, a cube, and a sphere, all made up of the same material and having the same mass, are heated to 300°C and left in a room. Which of them will have the slowest rate of cooling?

A

Circular plate

B

Cube

C

Sphere

D

All will cool at the same rate

C

Correct Answer: C. Sphere

80091283. The term 'equinox' means

A

The path which the Earth takes around the Sun

B

The axis of the Earth around which it rotates

C

When the day and night are of equal duration

D

The time when the Sun seems to be going round and round in the sky in the Arctic but does not go below the horizon

C

Correct Answer: C. When the day and night are of equal duration

80088284. The speed of light with the rise in the temperature of the medium :

A

Increases

B

Decreases

C

Remains unaltered

D

Drops suddenly

C

Correct Answer: C. Remains unaltered

80013285. A pond of water appears less deep due to

A

reflection

B

diffraction

C

refraction

D

polarisation

C

Correct Answer: C. refraction

80106286. What is the reason for the twinkling of stars?

A

Dispersion of light

B

Total internal reflection

C

Atmospheric reflection

D

Atmospheric refraction

D

Correct Answer: D. Atmospheric refraction

80045287. Knot is a measure of

A

The speed of ship

B

The curvature of spherical objects

C

Solar radiation

D

Intensity of earthquake shock

A

Correct Answer: A. The speed of ship

80054288. One Kilowatt-hour is equal to

A

3.6 Mega Joule

B

3.8 Mega Joule

C

3.2 Mega Joule

D

4.0 Mega Joule

A

Correct Answer: A. 3.6 Mega Joule

80099289. Ultraviolet radiations of the Sun do not reach the earth because the earth's atmosphere is surrounded by

A

Carbon dioxide

B

Ammonia

C

Chlorine

D

Ozone

D

Correct Answer: D. Ozone

80012290. A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is

A

the same in both cases in all respects

B

of higher intensity when train arrives

C

of higher pitch when train arrives

D

of higher pitch when train departs

C

Correct Answer: C. of higher pitch when train arrives

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