Topic: Heat Transfer
The spectral energy distribution for a body at temperature T is shown in figure. Now if the temperature of the body is increased
- A. lambda_m Will shift towards right
- B. lambda_m Will shift towards left
- C. The total energy emitted by the body will decrease
- D. lambda_m will remain the same but E_m will increase
Answer: B. lambda_m Will shift towards left
Explanation: According to Wien's displacement law, lambda_m * T = constant (b). As the temperature of the body is increased, the maximum wavelength lambda_m decreases, so it will shift towards the left.