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JEE Main 2002
Exam
JEE Main
Year
2002
Subject
Physics
Chapter
Thermal Properties of Matter

JEE Main 2002 · Physics · Thermal Properties of Matter

Two spheres of the same material have radii 1 ~m and 4 ~m and...

Two spheres of the same material have radii 1 m1 \mathrm{~m} and 4 m4 \mathrm{~m} and temperatures 4000 K4000 \mathrm{~K} and 2000 K2000 \mathrm{~K} respectively. The ratio of the energy radiated per second by the first sphere to that by the second is

Options

  1. A1 : 1
  2. B16 : 1
  3. C4 : 1
  4. D5 : 3

Correct answer

A. 1 : 1

Step-by-step solution

Energy radiated αR2T4\alpha R^2 T^4
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