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Characteristics of Sound Waves

A swing has a...

Question

A swing has a time period of 1.4 seconds. The no. of oscillations made by it within 1 minute 24 seconds will be:

A

20

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B

40

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C

60

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D

80

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Solution

The correct option is C
60

T = 1.4 s

Total time = 1 min 24 s = 84 s

No. of oscillations = total time/ T = 84/1.4 = 60

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