MHT CET Physics question

A body cools room 70°C to 50°C in 6 minutes. If the temperature of surrounding is 30°C, what is the temperature after 12 minutes?

Answer: (D)

Solution

The excess over the surroundings falls from 40°C to 20°C in 6 min (halved), so after 12 min it is 10°C and the temperature is °C

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Question ID VK-063129