JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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Application +4 | -1

If a body coated black at

600 \mathrm{~K}

surrounded by atmosphere at

300 \mathrm{~K}

has cooling rate

r_0

, the same body at

900 \mathrm{~K}

, surrounded by the same atmosphere, will have cooling rate equal to

View answer and explanation

Correct option: A

\frac{16}{3} r_0

Option A (

\frac{16}{3} r_0

) is correct because the cooling rate is proportional to the difference of the fourth power of the temperatures.

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