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Question 30752
JEE Physics · Hard

Gravitation: Tidal Force MCQ

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Tidal ForceHardQuestion 30752

Question

Tidal forces on Earth are caused by:
  1. A
    The average gravitational pull of the Moon
  2. B
    The difference in Moon's gravitational pull across Earth's diameter
    Correct
  3. C
    The Sun's gravity only
  4. D
    Earth's rotation alone

Correct answer

The difference in Moon's gravitational pull across Earth's diameter

Explanation

The side of Earth facing the Moon experiences stronger pull than the centre, and the far side weaker. This differential (tidal) force stretches Earth, creating two tidal bulges and the twice-daily tides.

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