NEET 2024 · PhysicsOrbit transferPrevious Year Question
The minimum energy required to launch a satellite of mass m from the surface of the earth (mass M, radius R) into a circular orbit at an altitude 2R from the surface is:
Answer: (D) 5GmM/6R. Correct Answer (D): 5GmM/6R Solution: Orbit radius r = 3R.
- A.3GmM/2R
- B.GmM/2R
- C.GmM/3R
- D.5GmM/6R✓
Correct Answer
(D) 5GmM/6R
Solution & Explanation
Correct Answer (D): 5GmM/6R Solution: Orbit radius r = 3R. E_orbit = −GMm/2(3R) = −GMm/6R. E_surface = −GMm/R. ΔE = −GMm/6R − (−GMm/R) = 5GMm/6R.
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