Physics Work & Energy BUMHS 2024
PMDC Verified Question 19 of 108
Which of the following force gives rise to ocean tides?
A
Frictional force
B
Gravitational force
C
Earth's magnetic force
D
Nuclear force
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Gravitational force
Concept:

Ocean tides are caused by the differential gravitational pull of massive celestial bodies on the Earth's oceans.

Formula:

$$ F = \frac{GMm}{r^2} $$

Solution:

  • The Moon and the Sun exert a gravitational pull on the Earth.


  • Because the oceans are fluid, they bulge outward toward the Moon (and slightly toward the Sun) due to this gravitational attraction.


  • This gravitational force is exclusively responsible for the rising and falling of ocean tides.


Why other options are incorrect:

Magnetic forces affect charged particles and compasses, not massive bodies of water. Nuclear forces act only at subatomic scales. Friction opposes motion.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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