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. `0.1%`
B. `0.8%`
C. `1.8%`
D. 0.08
A. `0.1%`
B. `0.8%`
C. `1.8%`
D. 0.08
Correct Answer – B