Home/
Competitive Exams/
JEE Main & Advanced/
Physics/
Gravitation/
Question 30723
JEE Physics · Easy

Gravitation: Escape Velocity MCQ

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

Timer-based practiceDetailed answer reviewMobile-friendly flow
Escape VelocityEasyQuestion 30723

Question

Escape velocity from Earth's surface is:
  1. A
    √(gR)
  2. B
    √(2gR)
    Correct
  3. C
    2gR
  4. D
    gR/2

Correct answer

√(2gR)

Explanation

From energy conservation (KE + PE = 0 at infinity): ½mv_e² = GMm/R = mgR → v_e = √(2gR) ≈ 11.2 km/s.

Review Gravitation notesStart timed chapter practice