A) Radiated energy would be predominantly in infrared
B) Radiated energy would be predominantly in ultraviolet
C) Radiated energy would be predominantly in X-ray region
D) Radiated energy would become twice the present radiated energy
Correct Answer: B
Solution :
The wavelength corresponding to maximum emission of radiation from the sun is \[{{\lambda }_{\max }}=4753{\AA}\] (close to the wavelength of violet colour of visible region). Hence if temperature is doubled \[{{\lambda }_{m}}\] is decreased \[\left( {{\lambda }_{m}}\propto \frac{1}{T} \right)\] i.e. mostly ultraviolet radiations emits.
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