light, heat, thermodynamics, wave motion, sound, optics & oscillations - Category wise Question and Answer Practice Test with Solutions

light, heat, thermodynamics, wave motion, sound, optics & oscillations PRACTICE TEST [16 - EXERCISES]

set 1

set 2

set 3

set 4

set 5

set 6

set 7

set 8

set 9

set 10

set 11

set 12

set 13

set 14

set 15

set 16

Question : 6 [UPPCS (Pre) 2012]

In an Earthen pitcher, the water remains cold due to the process of

a) Evaporation

b) Sublimation

c) Condensation

d) None of the above

Answer: (a)

Question : 7 [CDS]

Two identical piano wires have same fundamental frequency when kept under the same tension. What will happen if tension of one of the wire is slightly increased and both the wires are made to vibrate simultaneously?

a) Beats

b) Noise

c) Resonance

d) Non-linear effects

Answer: (c)

Question : 8 [IAS (Pre) 2003]

Consider the following statements.

  1. Steam at 100ºC and boiling water at 100ºC contain the same amount of heat.
  2. The latent heat of the fusion of ice is equal to the latent heat of the vaporization of water.
  3. In an air conditioner, heat is extracted from the room air at the evaporator coils and is ejected out at the condenser coils.
Which of these statements is/are correct?

a) 2 and 3

b) Only 2

c) 1 and 2

d) Only 3

Answer: (d)

Question : 9

The small ozone layer on the top of stratosphere is crucial for human survival as it –

a) decreases oxygen in the atmosphere

b) increases the carbon dioxide in the atmosphere

c) increases carbon mono-oxide in the atmosphere

d) absorbs ultraviolet radiations

Answer: (d)

The ozone layer in stratosphere absorbs ultraviolet radiation in sun rays which are harmful. For human being.

Question : 10

The temperature of the sun is measured with

a) Pyrometer

b) Platinum thermometer

c) Gas theromometer

d) Vapour pressure thermometer

Answer: (a)

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1640 light thermodynamics sound optics and oscillations based general science mcq set 2 question answer pdf
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