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Frequency

Fill in the b...

Question

Fill in the blanks.

(a) Man can hear sounds of frequencies between 20 and ………… Hz.

(b) Amplitude and ………… are not related.

(c) The period of oscillation depends upon the ………… of the pendulum.

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Solution

(a) Man can hear sounds of frequencies between 20 and 20,000 Hz.

(b) Amplitude and frequency are not related.

(c) The period of oscillation depends upon the length of the pendulum.

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Q. Which of the following is true for an oscillating pendulum of fixed length?
(a) Frequency depends on amplitude of oscillation.
(b) Frequency and time-period are not related.
(c) Time-period depends on amplitude of oscillation.
(d) Frequency and time-period do not depend on amplitude of oscillation.

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(a) How is sound produced ?

(b) What does the intensity of sound depend upon ?

(c) Explain how the frequency of oscillation is related to the length of a pendulum and the amplitude of its oscillation.

(d) Explain the two ways by which the pitch of the sound generated by a stretched string can be changed.

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