If the initial temperatures of metallic sphere and disc, of the same mass, radius and nature are equal, then the ratio of their rate of cooling in same environment will be

Question

Dr. Abubacker · Accepted Answer

(d) $E \propto AT^{4} \Rightarrow \frac{E_{sphere}}{E_{Disc}} = \frac{4\pi r^{2}}{2\pi r^{2}} 	imes \left( \frac{T}{T} ight)^{4} = \frac{2}{1}$

Q. If the initial temperatures of metallic sphere and disc, of the same mass, radius and nature are equal, then the ratio of their rate of cooling in same environment will be

Explanation

Reviewed by Dr. Abubacker

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