Chemistry · 2021
JEE Main · 26 February 2021, Shift 2 · Q53
A ball weighing 10 g is moving with a velocity of 90 ms^-1. If the uncertainty in its velocity is 5 %, then the uncertainty in its position is \ \ \…
A ball weighing $\displaystyle 10$ g is moving with a velocity of $\displaystyle 90 \mathrm{~ms}^{-1}$. If the uncertainty in its velocity is $\displaystyle 5 \%$, then the uncertainty in its position is \_\_\_\_$\displaystyle \times 10^{-33} \mathrm{~m}$. (Rounded off to the nearest integer)
[Given : $\displaystyle \mathrm{h}=6.63 \times 10^{-34} \mathrm{Js}$ ]
Official answer
1
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JEE Main 2021 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.