First slide
Radiation
Question

On observing light from three different stars P, Q and R. It was found that intensity of violet colour is maximum in the spectrum of P, the intensity of green colour is maximum in the spectrum of R and the intensity of red colour is maximum in the spectrum of Q. If Tp , TQ and TR are the respective absolute temperature of P, Q and R, then it can be concluded from the above observations that 

Moderate
Solution

From Wein's displacement law,    λm×T = constant P-max. Intensity is at violet  λm is minimum  temperature maximum

R-max. intensity is at given ⇒ λm is moderate  temperature moderate

Q-max intensity is at red  λm is maximum  temperture minimum

i.e., Tp > TR > TQ

Get Instant Solutions
When in doubt download our app. Now available Google Play Store- Doubts App
Download Now
Doubts App