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Question 30775
JEE Physics · Hard

Gravitation: Advanced — Tidal Locking MCQ

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Advanced — Tidal LockingHardQuestion 30775

Question

The Moon always shows the same face to Earth because:
  1. A
    Moon does not rotate at all
  2. B
    Moon's rotational period equals its orbital period (tidal locking)
    Correct
  3. C
    Earth's gravity prevents Moon's rotation
  4. D
    Moon is not a sphere

Correct answer

Moon's rotational period equals its orbital period (tidal locking)

Explanation

Tidal forces over billions of years synchronised the Moon's spin and orbital periods (both ≈ 27.3 days). This synchronous rotation keeps one face permanently toward Earth.

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