Hot water cools from 60^{\circ} {\C} to 50^{\circ} {\C} in the first 10 minutes and to 42^{\circ} {\C} in the next 10 minutes. Then the temperature of the surroundings is ....................

KCET 2010 Physics Solved Paper

Question : 14 of 60

Marks: +1, -0

Hot water cools from 60∘C to 50∘C in the first 10 minutes and to 42∘C in the next 10 minutes. Then the temperature of the surroundings is ....................

15∘C
10∘C
20∘C
30∘C

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