Q. Variation in duration of day and night is due to: 1. rotation of earth on its axis 2. revolution of earth around the sun 3. inclination of earth at an angle of (Solved)
1. 1and 2
2. 2 and 3
3. 1 and 3
4. 1, 2 and 3
- b. 2 and 3
1. 1and 2
2. 2 and 3
3. 1 and 3
4. 1, 2 and 3