Assertion (A): In the course of the earth's movement around the sun, the North Pole remains inclined towards the sun for a part of the year while the South Pole is tilted away from it.
Reason (R): The earth rotates on an inclined axis in an elliptical path around the sun.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R does not explain A.
- A is true but R is false.
- A is false but R is true.
Both A and R are true and R is the correct explanation of A.
Explanation — The earth rotates on an inclined axis in an elliptical path around the sun. The earth's axis is inclined at an angle of 23.5° from the perpendicular to this plane of the elliptic. As a result of this, in the course of the earth's movement around the sun, the North Pole remains inclined towards the sun for a part of the year while the South Pole is tilted away from it. For the remaining part of the year, the situation is reversed.