Assume that the Earth is a spherical ball of radius x km with a smooth surface so that one can trave...........

Quantitative Aptitude( Paper-I ) Mensuration 3D

Assume that the Earth is a spherical ball of radius x km with a smooth surface so that one can travel along any direction. If you have travelled from point P on the Earth's surface along the East direction a distance of 7tX km, which direction do you have to travel to return to P so that the distance required to travel is minimum?

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CAPF 2023 Paper-1

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East only

West only

East or West but not any other direction

Any fixed direction

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Explanation:

Any fixed direction.

Radius is x km.
Circumference or total distance we have to travel for completing one round is 2 × 22/7 × x km
If you have travelled from point P on the Earth's surface along the East direction a distance of
22/7 x km. That means half of the round is covered.
If you travel in any fixed direction after that then in same time you will reach at P because this is a sphere.

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