Verified Solution • 2025–26 Session moderate

QJEEM19Ph2635: JEE Main 2019 Physics - Class 11 JEEM19Ph2635 Solution: A satellite is revolving in a circular orbit at a height h form …

A satellite is revolving in a circular orbit at a height h form the earth surface, such that h < < R where R is the earth. Assuming that the effect of earth's atmosphere can be neglected the minimum increase in the speed required so that the satellite could escape from the gravitational field of earth is :

Multiple Choice Options

  • A gR(2−1)
  • B 2gR
  • C gR
  • D gR2

Step-by-Step Verified Solution

v0 = g(R+h)≈gR

ve = 2g(R+h)≈2gR

Δv=ve − v0 = (2−1)gR

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