1.

On observing light from three different stars P, Q and R, it was found that intensity of violet color 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 observation that :

Answer»

`T_(P)gtT_(R)gtT_(Q)`
`T_(P)ltT_(R)ltT_(Q)`
`T_(P)ltT_(Q)ltT_(R)`
`T_(P)gtT_(Q)gtT_(R)`

Solution :As per Wein.s displacement LAW `lamda_(m)` T = constant.
`:.` If `lamda_(m)` decreases, then T increase.
Now from sequence .VIBGYOR..
`lamda_(m)` of violet is minimum, hence T is MAXIMUM `lamda_(m)` of red is maximum hence T is minimum
`:.T_(P)gtT_(R)gtT_(Q)`


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