Question

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

• A. The temperature recorded by both will be same.
• B. The temperature recorded by the 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

Answer 1

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

The thermometer whose bulb is wrapped by wet hanky; undergoes evaporation process; and we know that evaporation results in cooling, so the wet bulb, thermometer will record less temperature than that of dry bulb thermometer.