Mathematics in Physics

JEE Main level, single correct, medium

65 of 121

Question 65 of 121

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 s4.62 \mathrm{~s}, 4.632 \mathrm{~s}, 4.6 \mathrm{~s} and 4.64 s4.64 \mathrm{~s}. The arithmetic mean of these readings in correct significant figure is :

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Answer: (C) 4.6 s4.6 \mathrm{~s}

Sum of number by considering significant digi
sum =4.6+4.6+4.6+4.6=18.4\text {sum }=4.6+4.6+4.6+4.6=18.4
Arithmetic Mean = sum 4=18.44=4.6=\frac{\text { sum }}{4}=\frac{18.4}{4}=4.6

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