Question

A black body emits radiations of maximum intensity at a wavelength of $5000\dot{A}$ , when the temperature of the body is ${1227}^0$ C. If the temperature of the body is increased by 1000° C, the maximum intensity of emitted radiation would be observed at

• A. 2754.8 Å
• B. 3000 Å
• C. 3500 Å
• D. 4000 Å

Answer 1

The correct option is B

3000 Å

${\lambda }_{m_2}=\frac{T_1}{T_2}\times {\lambda }_{m_1}=\frac{1500}{2500}\times 5000=3000\dot{A}$