Q. A black body emits radiations of maximum intensity at a wavelength of $5000\mathring{\mathrm{A}}$, when the temperature of the body is $1227℃$. If the temperature of the body is increased by $2227℃$, the maximum intensity of emitted radiation would be observed at
A) $2754.8\mathring{\mathrm{A}}$
B) $3000\mathring{\mathrm{A}}$
C) $3500\mathring{\mathrm{A}}$
D) $4000\mathring{\mathrm{A}}$
Explanation
(b) $\lambda_{m_{2}} = \frac{T_{1}}{T_{2}} \times \lambda_{m_{1}} = \frac{1500}{2500} \times 5000 = 3000\mathring{\mathrm{A}}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.