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

  • question_answer
    An ordinary clock loses time during summer because the length of the pendulum:

    A)  Increases and therefore the time-period increases

    B)  Increases and therefore the time-period decreases

    C)  Decreases and therefore the time-period increases

    D)  Decreases and therefore the time-period decreases

    Correct Answer: A

    Solution :

    [a] The pendulum and clock are matched so that the clock marks a certain number of seconds for a precise number of swings. If the pendulum grows longer because of heat, then the pendulum swing takes longer. The clock has to wait longer before marking off the same number of seconds. Therefore, the clock will become late (it loses time).


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