Question:
The Earth’s radius is maximum at which one of the following latitudes?
The Earth’s radius is maximum at which one of the following latitudes?
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Equatorial radius ≈ 6378 km, Polar radius ≈ 6357 km — a difference of about 21 km.
Updated On: Dec 6, 2025
- 0°
- 40° N
- 60° S
- 90°
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The Correct Option is A
Solution and Explanation
Step 1: Understanding Earth's shape.
The Earth is not a perfect sphere; it is an oblate spheroid, flattened at the poles and bulging at the equator.
Step 2: Reasoning.
Due to Earth's rotation, the equatorial regions experience a greater outward centrifugal force, increasing the equatorial radius.
Step 3: Conclusion.
Thus, the Earth's radius is maximum at the equator (0° latitude).
The Earth is not a perfect sphere; it is an oblate spheroid, flattened at the poles and bulging at the equator.
Step 2: Reasoning.
Due to Earth's rotation, the equatorial regions experience a greater outward centrifugal force, increasing the equatorial radius.
Step 3: Conclusion.
Thus, the Earth's radius is maximum at the equator (0° latitude).
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