Properties Of Solids And Liquids Question 516

Question: Two thermometers are used to record the temperature of a room. If the bulb of one is wrapped in wet hanky [AFMC 1997]

Options:

A) The temperature recorded by both will be same

B) The temperature recorded by wet-bulb thermometer will be greater than that recorded by the other

C) The temperature recorded by dry-bulb thermometer will be greater than that recorded by the other

D) None of the above

Show Answer

Answer:

Correct Answer: C

Solution:

Due to evaporation cooling is caused which lowers the temperature of bulb wrapped in wet hanky.



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