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JEE MAIN 2021
22-07-21 S2
Question
A body is projected vertically upwards from the surface of earth with a velocity sufficient enough to carry it to infinity. The time taken by it to reach height h is ________S.
Select the correct option:
A
$\sqrt{\frac{R_e}{2 g}}\left[\left(1+\frac{h}{R_e}\right)^{3 / 2}-1\right]$
B
$\sqrt{\frac{2 R_e}{g}}\left[\left(1+\frac{h}{R_e}\right)^{3 / 2}-1\right]$
C
$\frac{1}{3} \sqrt{\frac{R_e}{2 g}}\left[\left(1+\frac{h}{R_e}\right)^{3 / 2}-1\right]$
D
$\frac{1}{3} \sqrt{\frac{2 R_e}{g}}\left[\left(1+\frac{h}{R_e}\right)^{3 / 2}-1\right]$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
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JEE Main
Physics
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