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MHT CET Physics question

PhysicsThermal Properties of MatterMHT CET

Two spherical black bodies A and B having radii 5 cm and 20 cm respectively are at temperatures and respectively. The maximum wavelength in the emission spectrum of A is 350 nm and in that of B is 1400 nm. The ratio of rate of total energy radiated by body A to that of body B is [MHT-CET 2019]

Answer: (A)

Solution

gives ; power , so

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Question ID VK-063901