Question

Three stars appear as green, red and blue in colour. Which has maximum temperature?​

Answer 1

Answer:

Wien's Displacement law :

The wavelength of maximum intensity of emission λ_m of black body radiation is inversely proportional to the absolute temperature T of black body.

Mathematically

λ_m ∝ 1 / T

λ_m = b / T

Where b = Wien's constant.

Now λ_m for blue is minimum from Wien's Displacement law.

Therefore , star which appear blue has maximum temperature.

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Explain why a beaker filled with water at 4°C overflow if  the temperature is decreased or increased?​

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