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AP EAMCET20225 Jul 2022Evening ShiftPhysicsThermal Properties of MatterActual

A body cools down from 75^ C to 60^ C in 10 minutes. It will cool down from 65^ C to 55^ C in a time

Options

  1. A10 minutes
  2. BLess than 10 minutes
  3. CMore than 10 minutes
  4. DLess than or more than 10 minutes depending on its mass

Correct answer

C. More than 10 minutes

Step-by-step solution

From Newton's law of cooling, rate of cooling of substance is directly proportional to temperature difference with the surrounding. So as the temperature reduces, the rate of cooling decreases and time of cooling increases.

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