Question:

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

(1) 4.623 s

(2) 4.62 s 

(3) 4.6 s

(4) 5 s                                                             JEE-2024 

Solution:                
Time periods of oscillation of the same simple pendulum measured using four different measuring clocks were recorded as 4.62 s, 4.632 s, 4.6 s and 4.64 s. The arithmetic mean of these reading in correct significant figure is: (1) 4.623 s (2) 4.62 s (3) 4.6 s (4) 5 s JEE-2024

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