Question

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

Answer 1

Variations in the length of daytime and nighttime from season to season are due to (d) Revolution of the earth on the tilted axis

Answer 2

Answer:

The correct answer of this question is option d,Revolution of the earth on a tilted axis.

Explanation:

We know that our earth is revolving around the sun in an elliptical orbit,and one complete revolution around the sun takes the time period of one year.

During this one year long revolution process,the distance between earth and sun changes continuously, because the there is no constant diameter of the elliptical orbit.

And this changes of distance are the main reason behind the change of daytime and nighttime expansions.