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RRB Non Technical Model Papers 10 with solutions
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Question : 28
Total: 100
The velocity of sound in moist air is more than in dry air because the moist air has
less pressure than dry air
less density than dry air
more pressure than dry air
more density than dry air
Validate
Solution:
(2) The velocity of sound in moist air is more than in dry air because moist air has less density than dry air as water vapour is lighter than dry air. The velocity of sound is inversely proportional to its density.
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