Tides are produced in a sea due to the gravitational pull of
Correct answer: D. both (a) and (c)
- A. moon
- B. Earth
- C. sun
- D. both (a) and (c)
Explanation
Tides are primarily caused by the gravitational pull of both the moon and the sun. The gravitational force exerted by the moon and the sun on Earth's oceans creates the tidal bulges that we observe.Incorrect Options Explanation:(a) moon: The moon's gravitational pull alone causes tidal effects, but it's not the only factor.(b) Earth: Earth's gravity holds the oceans in place but does not directly cause tides.(c) sun: The sun's gravitational pull alone also causes tidal effects, but it's not the only factor.
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About Work and Energy
Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
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