Two spherical bodies of same materials having radii 0.2 m and 0.8 m are placed in same atmosphere. The temperature of the smaller body is 800 K and temperature of the bigger body is 400 K . If the energy radiated from the smaller body is E,

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Two spherical bodies of same materials having radii 0.2 m and 0.8 m are placed in same atmosphere. The temperature of the smaller body is 800 K and temperature of the bigger body is 400 K . If the energy radiated from the smaller body is E, the energy radiated from the bigger body is (assume, effect of the surrounding temperature to be negligible),

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Correct answer: B. E

aligned & d dt = eAT ^4 P AT ^4 & P _ smaller P _ larger = (0.2)^2 800^4 (0.8)^2 400^4 & 1 16 16=1 & P _ larger = P _ smaller aligned

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