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Mathematics Tes...

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  • Question 1
    4 / -1

    A tuning fork of known frequency 256 Hz makes 5 beats per second with the vibrating string of a piano. The beat frequency decreases to 2 beats per second when the tension in the piano string is slightly increased. The frequency of the piano string before increasing the tension was

  • Question 2
    4 / -1

    The image formed by an objective of a compound microscope is

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