Home/
Competitive Exams/
JEE Main & Advanced/
Physics/
Circular Motion/
Question 30662
JEE Physics · Medium

Circular Motion: JEE — Satellite Circular Speed MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow
JEE — Satellite Circular SpeedMediumQuestion 30662

Question

A satellite orbits at radius 2R from Earth's centre (R = Earth's radius). If g at surface = 10 m/s², orbital speed is:
  1. A
    √(10R)
  2. B
    √(5R)
    Correct
  3. C
    √(2.5R)
  4. D
    √(20R)

Correct answer

√(5R)

Explanation

g at 2R = g×R²/(2R)² = g/4 = 2.5 m/s². v = √(g'×2R) = √(2.5×2R) = √(5R) m/s (where R in metres).

Review Circular Motion notesStart timed chapter practice