UPSC NDA I 2014 General Ability Paper

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Question : 94 of 150

Marks: +1, -0

The summer and winter seasons in a year are caused by

[NDA I 2014]

aphelion (farthest) and perihelion (nearest) positions of the Earth from the Sun during the annual revolution
rotation of the Earth on its axis
variation in solar insolation
revolution of the Earth on its inclined axis.

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