Question

Assertion (A): For each 1° longitude towards the East, 4 minutes are to be added and each 1° longitude towards the West, 4 minutes are to be subtracted.

Reason (R): The earth rotates on its axis from East to West.

पर्याय

• 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.

Answer 1

Both A and R are true and R is the correct explanation of A.

Explanation:

• Assertion (A) is true: The Earth takes 24 hours to complete a full rotation of 360°. Therefore, the Earth rotates 15° per hour, or 1° every 4 minutes. If you move eastward, time is ahead by 4 minutes for each degree, and if you move westward, time is behind by 4 minutes for each degree.
• Reason (R) is also true: The Earth rotates from East to West, which means that the Sun rises in the East and sets in the West. This rotation explains the time difference based on longitude.