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According to Newton's law, rate of cooli...

According to Newton's law, rate of cooling is proportional to the difference between the temperature of the body and the temperature of the air. If the temperature of the air is `20^(@)C` and body cools for 20 min from `100^(@)C` to `60^(@)C` then the time it will take for it temperature to drop to `30^(@)` is

A

30 min

B

40 min

C

60 min

D

80 min

Text Solution

Verified by Experts

The correct Answer is:
C
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