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Physics 9 Chapter 9 - Transfer of Heat - 17
1.
Upon which of the following factors, the amount of heat absorbed by a body depends?
a) Amount of air present in the atmosphere
b) Colour of the surface
c) Both b and c
d) Nature of the surface
2.
Which of the following surface absorbs more heat?
a) All of these
b) Polished surface
c) White surface
d) Rough surface
3.
Which of the following surface absorbs less heat?
a) All of these
b) Rough surface
c) Polished surface
d) Black surface
4.
Which of the following surface absorbs less heat?
a) Black surface
b) White surface
c) Rough surface
d) All of these
5.
By which colour the bottom of cooking pots are made?
a) Black
b) White
c) None of these
d) Polished
6.
Which law heat radiations obey?
a) Laws of refraction
b) Laws of interference
c) Laws of reflection
d) Laws of diffraction
7.
Upon which of the following factors, the amount of heat reflected by a body depends?
a) Amount of air present in the atmosphere
b) Both b and c
c) Nature of the surface
d) Colour of the surface
8.
Which of the following surface reflects more heat?
a) Coloured surfaces
b) Black surface
c) White surface
d) Rough surface
9.
Which of the following surface reflects more heat?
a) Polished surface
b) Black surface
c) Rough surface
d) Coloured surfaces
10.
Which colour clothes we wear in summer?
a) Light coloured
b) White coloured
c) Both b and c
d) Black coloured
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