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  1. The light coming from stars gives the idea of their ________

    2. A.

     Size
    B.

     Rotational speed
    C.

     Mass
    D.

     Temperature

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    Answer : Option D

    Explanation :

    Stars emit colors of many different wavelengths, but the wavelength of light where a star's emission is concentrated is related to the star's temperature - the hotter the star, the more blue it is; the cooler the star, the more red it is.

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