Verified Solution • 2025–26 Session moderate

QJEEM19Ph2040: JEE Main 2019 Physics - Class 11 JEEM19Ph2040 Solution: The value of acceleration due to gravity at Earth's surface is…

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 decreases to 4.9 ms–2, is close to : (Radius of earth = 6.4 × 106 m)

Multiple Choice Options

  • A 1.6 × 106 m
  • B 9.0 × 106 m
  • C 6.4 × 106 m
  • D 2.6 × 106 m

Step-by-Step Verified Solution

GM(R+h)2=GM2R2

R+h=2R

h=(2−1)R≃2.6×106m

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