Question

A rectangular body has maximum wavelength at 2000 K. Its corresponding wavelength at 3000 K will be

• A. $\frac{2}{3}\lambda_{m}$
• A. (b) $\frac{2}{3}\lambda_{m}$
• C. $\frac{16}{81}\lambda_{m}$
• D. $\frac{18}{16}\lambda_{m}$

Answer 1

According to Wien’s law $\lambda_{m} \propto \frac{1}{T}$

When temperature becomes $\frac{3}{2}$time $\lambda_{m}$ becomes $\frac{2}{3}$times