If the absolute temperature of a blackbody is tripled, its radiant energy emitted per unit area becomes

Options

  • A. 3 times
  • B. 9 times
  • C. 27 times
  • D. 81 times
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

D. 81 times

Detailed Explanation

Using E proportional to T⁴, tripling temperature gives 3⁴ = 81 times the radiation.