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The period of oscillation of spring pend...

The period of oscillation of spring pendulum is given by `T = 2pi sqrt(m/k)` where m is 100 gm and is know to have 0.1 gm accuracy. The time period is 2 sec. The time of 100 oscillations is measured by a stop watch of least count 0.1 s. The percentage error in k is

A

`0.1%`

B

`1%`

C

`0.2%`

D

`0.8%`

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The correct Answer is:
C
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