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JIPMER 2005
Exam
JIPMER
Year
2005
Subject
Physics
Chapter
Thermal Properties of Matter

JIPMER 2005 · Physics · Thermal Properties of Matter

The temperature of the black body increases from T to 2 T . The...

The temperature of the black body increases from TT to 2T2 T. The factor by which the rate of emission will increase, is?

Options

  1. A4
  2. B2
  3. C16
  4. D8

Correct answer

C. 16

Step-by-step solution

According to Stefan's law for radiated energy E∝T4E \propto T^4 Hence, E1E2=T14T24=\frac{E_1}{E_2}=\frac{T_1^4}{T_2^4}=\left(\frac{T}{2 T}\right)^4=\frac{1}{16} \therefore \quad E_2=16 E_1
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