1. Tardigrade
  2. Question
  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 :

Q. A black metal foil is warmed by radiation from a small sphere at temperature and at a distance . It is found that the power received by the foil is . 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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