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Questions  

Certain quantity of water cools from 700C to 600C in the first 5 minutes and to 540C in the next 5 minutes. The temperature of the surroundings is  

a
200C
b
420C
c
100C
d
450C

detailed solution

Correct option is D

According to Newton's Law of cooling,

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Similar Questions

A calorimeter of mass 0.2 kg and specific heat 900 J/kg/K. Containing 0.5 kg of a liquid of specific heat 2400J/kg/K. Its temperature falls from 600C to 550C in one minute. Find the rate of cooling.


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