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SSC General Science & Technology Sample Paper NCERT Sample Paper-2

  • question_answer
    Heat is transmitted from higher to lower temperature through actual mass motion of the molecules in:

    A)  Conduction      

    B)  Convection

    C)  Radiation         

    D)  All of The Above

    Correct Answer: B

    Solution :

    [b] Convection is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it. Convection above a hot surface occurs because hot air expands, becomes less dense, and rises.


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