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Grade 9Modern Physics

A hot liquid takes 5 minutes to cool from 700C to 600C. T he time taken by the same liquid to cool from 600C to 500C will be- ---------(take surrounding temp is 200C)

theja

12 Years agoGrade 9

1 Answer

Arun Kumar

12 Years ago

$T(t)=T_{A}+(T_{H}-T_{A})e^{-kt}$

A=Temperature of surrounding

H=Initial Temperature

Setting up equation.

$400=500e^{-k5},300=400e^{-kt}\\ =>ln(4/5)/ln(3/4)=5/t$

Arun Kumar

IIT Delhi

Askiitians Faculty

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