A body takes 5 minutes to cool from 90oC to 60oC. If the temperature o – McqOptions

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1.	A body takes 5 minutes to cool from 90oC to 60oC. If the temperature of the surroundings is 20oC, the time taken by it to cool from 60oC to 30oC will be. [RPMT 2003]
A.	5 min
B.	8 min
C.	11 min
D.	12 min
Answer» D. 12 min

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