Question

The wavelength of the radiation emitted by a body depends upon

• A. the nature of the surface
• B. the area of the surface
• C. the temperature of the surface
• D. all of the above factors

Answer 1

Answer: (C)

the temperature of the surface

Answer 2

According to Wien's law $\lambda \propto \frac{1}{T}$ i.e., it depends on the temperature of the surface