JEE Main 2022 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 25 July 2022, Shift 2, Physics Q43

Question 43 of 90 in this shift, Physics question 13 of 30, Section A.

The length of a seconds pendulum at a height h = 2R from earth surface will be : (Given R = Radius of earth and acceleration due to gravity at the surface of earth, g =

\pi^{2}

^{-2}

)

(1) $\frac{2}{9}$ m
(2) $\frac{4}{9}$ m
(3) $\frac{8}{9}$ m
(4) $\frac{1}{9}$ mOfficial answer

Official answer

Option 4

NTA final key.

Chapter: Gravitation
Topic: Pendulums
Idea tested: Seconds Pendulum

JEE Main 25 July 2022, Shift 2, Physics Q43

Same idea in other shifts