Physics · 2019
JEE Main · 10 April 2019, Shift 1 · Q8
The value of acceleration due to gravity at Earth's surface is 9.8 ms^-2. The altitude above its surface at which the acceleration due to gravity…
The value of acceleration due to gravity at Earth's surface is $\displaystyle 9.8 \mathrm{~ms}^{-2}$. The altitude above its surface at which the acceleration due to gravity decreases to $\displaystyle 4.9 \mathrm{~ms}^{-2}$, is close to : $\displaystyle \left(\right.$ Radius of earth $\displaystyle \left.=6.4 \times 10^6 \mathrm{~m}\right)$
Official answer
(1)
$\displaystyle 2.6 \times 10^6 \mathrm{~m}$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.