Q1. Different seasons are formed because
(a) Sun is moving around the earth
(b) Of revolution of the earth around the sun on its orbit
(c) Of rotation of the earth around its axis
(d) All of the above
(UPSC Prelims 1981)
Answer: (b) Of revolution of the earth around the sun on its orbit
Explanation: Seasons occur due to the Earth’s revolution around the Sun and the tilt of its axis, which causes varying sunlight intensity across hemispheres. This leads to summer, winter, spring, and autumn in different regions.