Physics · 2019
JEE Main · 8 April 2019, Shift 2 · Q30
In a simple pendulum experiment for determination of acceleration due to gravity (g), time taken for 20 oscillations is measured by using a watch of…
In a simple pendulum experiment for determination of acceleration due to gravity (g), time taken for $\displaystyle 20$ oscillations is measured by using a watch of $\displaystyle 1$ second least count. The mean value of time taken comes out to be $\displaystyle 30$ s . The length of pendulum is measured by using a meter scale of least count $\displaystyle 1$ mm and the value obtained is $\displaystyle 55.0$ cm . The percentage error in the determination of g is close to :
Official answer
(4)
6.$\displaystyle 8$ %
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.