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In a simple pendulum experiment for dete...

In a simple pendulum experiment for determination of acceleration due to gravity `(g)`, time taken for `20` oscillations is measure by using a watch of `1` second least count. The means value of time taken comes out to be 30s. The length pf pendulum is measured by using a meter scale of least count 1mm and the value obtined is `55.0 cm` The percentage error in the determination of `g` is close to :

A

`0.2%`

B

`6.8%`

C

`3.5%`

D

`0.7%`

Text Solution

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The correct Answer is:
B
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