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Q.

An object vibrates 2400 times in 15 secs. What is its time period?


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a

0.00625 seconds

b

6.25 seconds

c

0.0625 seconds

d

1.2 seconds 

answer is A.

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Detailed Solution

The time period is 0.00625 seconds.
Given,
An object vibrates 2400 times in 15 secs.
As we know that “time taken to complete one oscillation by the object is known as time period”.
First, we need to find the frequency,
Frequency = Number of times the pendulum oscillatesTotal number of time taken
                      =240015
                      =160 Hz
So, the time period,
T=1f
    =1160 
    =0.00625 secs.
 
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