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8th Class General Knowledge Sample Paper General Knowledge Olympiad Model Test Paper-6

  • question_answer
    Choose the false one.
    (i) Sound needs a medium to travel.
    (ii) Pitch of sound increases when the frequency of vibrations increases and vice-versa. Pitch of sound is directly proportional to its frequency.
    (iii) Human beings can hear sounds only within 20-20,000 Hz.
    (iv) Shrillness of the sound is determined by the frequency of vibration.

    A)  iv                                

    B)  iii

    C)  ii

    D)  i

    E)  None of these

    Correct Answer: C

    Solution :

    Not Available                            


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