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Physics · 2020
JEE Main · 8 January 2020, Shift 2 · Q1
A simple pendulum is being used to determine the value of gravitational acceleration g at a certain place. The length of the pendulum is 25.0 cm and…
A simple pendulum is being used to determine the value of gravitational acceleration $\displaystyle g$ at a certain place. The length of the pendulum is $\displaystyle 25.0$ cm and a stop watch with $\displaystyle 1$ s resolution measures the time taken for $\displaystyle 40$ oscillations to be $\displaystyle 50$ s. The accuracy in g is :
Official answer
(3)
4.$\displaystyle 40$%
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.