1. Tardigrade
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  3. Physics
  4. A black metal foil is warmed by radiation from a small sphere at temperature T and at a distance d . It is found that the power received by the foil is P . If both the temperature and distance are doubled, the power received by the foil will be :

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Q. A black metal foil is warmed by radiation from a small sphere at temperature $T$ and at a distance $d$ . It is found that the power received by the foil is $P$ . If both the temperature and distance are doubled, the power received by the foil will be :

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Solution:

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