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

  • question_answer
    The cracking sound, heard when dry hair is combed with a hard rubber comb, is due to

    A)  The rubbing of the comb with the hair

    B)  Small electric sparks

    C)  The hair banging against the charged comb

    D)  None of these

    Correct Answer: B

    Solution :

    [b] When dry hair is combed static electricity is produced. It remains stored in the comb. When touches another surface the static discharge that is the sound


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