UPSC General Studies Sample Paper General Studies Sample Paper-9

  • question_answer
    Rain bearing clouds look black. The probable reason could be
    1. part of light is scattered by the tiny droplets of water in clouds.
    2. part of light is absorbed by the tiny droplets of water in clouds.
    3. there is a lot of dust condensed in water vapour.
    Select the correct answer using the codes given below.

    A)  1 and 2

    B)  1 and 3

    C)  2 and 3           

    D)  Only 1

    Correct Answer: A

    Solution :

    [a] Most clouds appear white, because sunlight reflects off the water droplets. If the clouds are thick, the droplets scatter or absorb the light and less solar radiation car travel through them. This is why, storm clouds are dark black or grey.

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