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Questions  

According to Newton's law of cooling, the rate of cooling of a body is proportional to (θ)n, where θ is the difference of the temperature of the body and the surroundings, and n is equal to

a
One
b
Two
c
Three
d
Four

detailed solution

Correct option is A

According to Newton's law Rate of cooling directly proportional to temperature difference ∆θ

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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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