Fill in the blank
A star which appears blue will be ________ the Sun

much hotter than

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colder than

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as hot as

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slightly colder than

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Solution

The correct option is B much hotter than
By Wien's displacement law, $λ T = b$
Hence, shorter the wavelength, higher will be the temperature and hotter will be the object.
Blue has much shorter wavelength than orange (colour of Sun). Thus, blue stars are much hotter than the Sun.

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Fill in the blankA star which appears blue will be ________ the Sun

The correct option is B much hotter thanBy Wien's displacement law, λ T=bHence, shorter the wavelength, higher will be the temperature and hotter will be the object.Blue has much shorter wavelength than orange (colour of Sun). Thus, blue stars are much hotter than the Sun.

Fill in the blank
A star which appears blue will be ________ the Sun

The correct option is B much hotter than
By Wien's displacement law, $λ T = b$
Hence, shorter the wavelength, higher will be the temperature and hotter will be the object.
Blue has much shorter wavelength than orange (colour of Sun). Thus, blue stars are much hotter than the Sun.