NEET2015PhysicsThermal Properties of MatterActual
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 T p , T Q and T R are the respective absolute temperatures of P , Q and R , then it can be concluded from the above observations that :
Options
- AT P > T Q > T R
- BT P > T R > T Q
- CT P < T R < T Q
- DT P < T Q < T R
Correct answer
B. T P > T R > T Q
Step-by-step solution
From Wein's Displacement law, > λ m T = c o n s t a n t   ⇒ λ m ∝ 1 T   >From the light spectrum, > λ m P < λ m R < λ m Q (as λ Red > λ Green > λ Violet ) >Hence, > T P > T R > T Q