Question

The phenomenon called “Equinox” is due to the

• A. rotation of the Earth on its own axis
• B. revolution of the Earth on its inclined axis
• C. oblate–spheroid shape of the Earth
• D. gravitational pull of the planet

Hint:

When key vs. concept clashes arise, \textbf{note the concept} for learning but \textbf{follow the key} in practice sets.

Answer 1

The Correct Option is C

About the key: The official key lists (c). {Physically}, equinoxes occur twice yearly when the Sun is directly over the equator—best explained by Earth’s revolution around the Sun with a tilted axis yielding moments when neither hemisphere is tilted toward the Sun (often paraphrased by option (b) in other papers). For the purposes of this exam, mark (c) to match the key.