SSC General Science & Technology Sample Paper NCERT Sample Paper-3

  • question_answer
    The cover of a solar cooker is made of glass:

    A)  Because glass allows sunlight into the container but does not allow heat radiation out of it

    B)  Because glass is transparent and one can see the good cooking

    C)  Because glass does not absorb heat radiation and, therefore, there is no wastage of energy

    D)  Because glass .is a good conductor of heat and is also cheep

    Correct Answer: A

    Solution :

    [a] The reason for this is so that your solar box/oven will be able to retain the heat that builds up from the reflector panel concentration of the sun rays onto your dark cooking pot, as well as into your box cooker interior. This is what is known as "the greenhouse effect"

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