An earthen pot is made of mud and has numerous pores in it. If water is filled in the pot, tiny amounts of water come out from these pores, keeping the outer surface slightly moist.
After a few hours, the water in the pot becomes refreshingly cold. This happens due to certain phenomenon. In which of these is the same phenomenon responsible for the effect seen?Immersive Reader
(1 Point)
a. Dew drops appear on cooler surfaces in the early morning
b. Water starts boiling when heated at 100 degrees Celsius.
c. Sweat evaporates on absorbing heat from the body and makes the body cooler.
d. Water droplets condense on the outer surface of a cold bottle kept in an open room.
Answers
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Answer :-
C option sweat evaporates on absorbing heat from the body and makes the body cooler
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The phenomenon responsible for the effect seen is sweat evaporates on absorbing heat from the body and makes the body cooler.
Explanation:
- Sweat gets evaporated by absorbing heat from the body and makes the body cooler. This is because the cooling of the body through perspiration is based on a physical principle called "heat of vaporization".
- It takes energy to evaporate sweat from the skin and that energy is heat.
- As the excess body heat is used to convert the drops of sweat into vapor, you begin to cool off.
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