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At a given temperature a body emits energy of a single wavelength corresponding to that temperature. True or False?

(a) True

(b) False

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The correct choice is (b) False

The best explanation: Thermal radiation from a body shows a continuous spectrum of wavelengths. But at a given temperature there is a particular short range of wavelengths which contributes the maximum to the total radiant energy. The graph given below shows the intensity of different wavelengths at different temperatures.

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