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प्रश्न
An object is vibrating at 50 Hz. What is its time period?
पर्याय
0.02 s
2 s
0.2 s
20.0 s
उत्तर
0.02 s
Explanation -
50 Hz. = `1/"T"`
`"T" = 1/50`
T = 0.02 s
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