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Standard XII

Physics

Intensity vs Photocurrent

On investigat...

Question

On investigation of light from three different stars A, B and C, it was found that in the spectrum of A the intensity of red colour is maximum, in B the intensity of blue colour is maximum and in C the intensity of yellow colour is maximum. From these observations it can be concluded that

The temperature of A is maximum, B is minimum and C is intermediate

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The temperature of A is maximum, C is minimum and B is intermediate

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The temperature of B is maximum, A is minimum and C is intermediate

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The temperature of C is maximum, B is minimum and A is intermediate

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Solution

The correct option is C
The temperature of B is maximum, A is minimum and C is intermediate

According to Wein's law, $λ_{m} T = c o n s t a n t$
$λ_{r} > λ_{y} > λ_{b} \Rightarrow T_{t} < T_{y} < T_{b} o r T_{A} < T_{C} < T_{B}$

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On investigation of light from three different stars A, B and C, it was found that in the spectrum of A the intensity of red colour is maximum, in B the intensity of blue colour is maximum and in C the intensity of yellow colour is maximum. From these observations it can be concluded that

The correct option is C The temperature of B is maximum, A is minimum and C is intermediate According to Wein's law, λmT=constant λr>λy>λb⇒Tt<Ty<Tb or TA<TC<TB

The correct option is C
The temperature of B is maximum, A is minimum and C is intermediate

According to Wein's law, $λ_{m} T = c o n s t a n t$
$λ_{r} > λ_{y} > λ_{b} \Rightarrow T_{t} < T_{y} < T_{b} o r T_{A} < T_{C} < T_{B}$