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A body cool from 90^@C to 70^@C in 10 mi...

A body cool from `90^@C` to `70^@C` in 10 minutes if temperature of surrounding is `20^@C`.
find the time taken by body to cool from `60^@C` to `30^@C`. Assuming Newton’s law of cooling is valid.

A

(a) 20 minutes

B

(b) 36 minutes

C

(c) 60 minutes

D

(d) 80 minutes

Text Solution

Verified by Experts

The correct Answer is:
C
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