Question
Question: The maximum energy in the thermal radiation from a hot source occurs at a wavelength of 11 × 10<sup>...
The maximum energy in the thermal radiation from a hot source occurs at a wavelength of 11 × 10–5 cm. According to Wien's law, the temperature of this source (on Kelvin scale) will be n times the temperature of another source (on Kelvin scale) for which the wavelength at maximum energy is 5.5 × 10–5 cm. The value n is –
A
2
B
4
C
1/2
D
1
Answer
1/2
Explanation
Solution
11 × 10–5 T1 = 5.5 × 10–5 T2
T2T1 = 21