Which one of the following statements concerning thermal radiation is correct? A

Question

Which one of the following statements concerning thermal radiation is correct?

A)As the temperature of an object increases, the total power emitted as thermal radiation increases and the peak of the radiation curve shifts to higher wavelengths.

B)As the temperature of an object increases, the total power emitted as thermal radiation decreases and the peak of the radiation curve shifts to higher wavelengths.

C) As the temperature of an object increases, the total power emitted as thermal radiation increases and the peak of the radiation curve shifts to lower wavelengths.

Explanation / Answer

Here,

for the power radiated

P = sigma * A * T^4

where T is the temperature

for the wavelength

wavelength = b/T

hence ,

C) As the temperature of an object increases, the total power emitted as thermal radiation increases and the peak of the radiation curve shifts to lower wavelengths.

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