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 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

(a) T_p < T_R < T_Q

(b) T_p < T_Q  < T_R

(c)  T_{p  >} T_Q  > T_R

(d) T_p > T_R T_Q

Answer 1

Correct option (d) T_p > T_R T_Q

Explanation:

According to Wein's displacement law

λ_m T = constant

For star P, intensity of violet colour is maximum For star Q, intensity of red colour is maximum. For star R, intensity of green colour is maximum.