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  4. In a room where temperature is 30° C, a body cools from 61° C to 59° C in 4 minutes. The time taken by the body to cool from 51° C to 49° C will be:

Q. In a room where temperature is , a body cools from to in 4 minutes. The time taken by the body to cool from to will be:

Thermal Properties of Matter Report Error

Solution:

Rate of cooling differenc in temperature



In first case:




For second case :


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