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The energy radiated by a black body at 2...

The energy radiated by a black body at `2300K` is found to have the maximum at `a` wavelength `1260nm`, its emissive power being `8000Wm^(-2)`. When the body is cooled to a temperature `TK`, the emissive power is found to decrease to `500 Wm^(-2)`. Find :
`(i)` the temperature `T`
`(ii)` the wave length at which intensity of emission in maximum at the temperature `T`.

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