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The least count of a stop watch is (1//5...

The least count of a stop watch is `(1//5)s`. The time 20 oscillations of a pendulum is measured to be `25 s`. The maximum percentage error in this measurement is

A

`8%`

B

`1%`

C

`0.8%`

D

`16%`

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaT=(1//5)/(20) and T= (25)/(20) , % ` error `=(DeltaT)/T xx 100`
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