MHT CET 2026 Physics question
A body cools from a temperature to in 10 minute. The room temperature is . The temperature of the body at the end of the next 10 minute is 'x'. Assuming that Newton's law of cooling is applicable, the value of 'x' will be
Answer: (C)
Solution
Newton's law of cooling in exponential form says the excess temperature over the surroundings decays by a constant factor in equal time intervals. In the first 10 min the excess over room temperature falls from to , a factor of . In the next 10 min
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