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AIIMS 2007
Exam
AIIMS
Year
2007
Subject
Physics
Chapter
Thermal Properties of Matter

AIIMS 2007 · Physics · Thermal Properties of Matter

If the temperature of a black body increases from (7^ C) to (287^...

If the temperature of a black body increases from (7^{\circ} \mathrm{C}) to (287^{\circ} \mathrm{C}) then the rate of energy radiation increases by

Options

  1. A(\left(\frac{287}{7}\right)^4)
  2. B16
  3. C4
  4. D2

Correct answer

B. 16

Step-by-step solution

The energy radiated per unit time by a black body at absolute temperature TT is given by (H=A \sigma T^4). where AA is the area of a black body or (\frac{H^{\prime}}{H}=\frac{[(287+273) \mathrm{K}]^4}{[(7+273) \mathrm{K}]^4}=\left[\frac{560}{280}\right]^4=16)
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