Time periods of oscillation of the same simple pendulum measured … - Vidyadip

MCQ

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

A
$4.623 \mathrm{~s}$
B
$4.62 \mathrm{~s}$
✓
$4.6 \mathrm{~s}$
D
$5 \mathrm{~s}$

✓

Answer

Correct option: C.

$4.6 \mathrm{~s}$

c
Sum of number by considering significant digit sum $=4.6+4.6+4.6+4.6=18.4$

$\text { Arithmetic Mean }=\frac{\text { sum }}{4}=\frac{18.4}{4}=4.6$

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