The colour of a star indicates its:
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A
According to weins displacement law λ m T = constant or temperature ∝ 
. it represents
that greater the temperature T of an emitted star, smaller is the value of wave length λ. We also know the wave length of light depends upon its colour. Hence, when the temperature of star increases, the wave length of light star decreases, the wave length of star decreases, the wave length increases and star moves towards the red colour. Therefore, the colour of star indicates its temperature.
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