Question

A blackbody emits radiations of maximum intensity at a wavelength of 6000 A, when the temperature of the body is 1227 °C. If the temperature of the body is increased by 2227 °C, the maximum intensity of emitted radiation would be observed at ______.

विकल्प

• 2754.8 Å

• 3600 Å

• 3000 Å

• 4000 Å

Answer 1

A blackbody emits radiations of maximum intensity at a wavelength of 6000 A, when the temperature of the body is 1227 °C. If the temperature of the body is increased by 2227 °C, the maximum intensity of emitted radiation would be observed at 3600 Å.

Explanation:

By Wien's law, (`lambda "m"_2)/(lambda"m"_1) = "T"-1/"T"_2`

∴ `lamda "m"_2 = "T"_1/"T"_2 xx lambda"m"_1 = (1500)/(2500) xx 6000 = 3600 Å`