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Time periods of oscillation of the same simple pendulum measured using four different measuring clocks were recorded as …

Q1

Time periods of oscillation of the same simple pendulum measured using four different measuring clocks were recorded as 4.62s , 4.632s , 4.6s and 4.64s. The arithmetic mean of these readings in correct significant figure is :

a

4.623s

b

4.62s

c

4.6s

d

5s

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