b. Prelims Paper (GS) Paper – 1

(UPSC 2013) 14. Variations in the length of daytime and nighttime

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    Wonder Boy
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      14. Variations in the length of daytime and nighttime from season to season are due to

      (a) the earth’s rotation on its axis

      (b) the earth’s revolution round the sun in an elliptical manner

      (c) latitudinal position of the place

      (d) revolution of the earth on a tilted axis

       

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