1. Tardigrade
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  4. The temperatures of two bodies A and B are respectively 727° C and 327° C. The ratio HA: HB of the rates of heat radiated by them is

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Q. The temperatures of two bodies $A$ and $B$ are respectively $727^{\circ} C$ and $327^{\circ} C$. The ratio $H_{A}: H_{B}$ of the rates of heat radiated by them is

ManipalManipal 2017

Solution:

As we know $Q \propto T^{4}$
$\Rightarrow \frac{H_{A}}{H_{B}}=\left[\frac{273+727}{273+327}\right]^{4}=\frac{625}{81}$