If the stars are seen to rise perpendicular to the horizon by an observer, he is located on the
- Equator
- Tropic of Cancer
- South Pole
- North Pole
Explanation
Option (a) is correct
- An observer located on the Equator sees stars rising and setting perpendicular to the horizon. This happens because the celestial poles lie on the horizon at the equator, causing the apparent movement of stars to be vertical relative to the horizon. At the poles and other latitudes, stars appear to move at inclined angles rather than straight upward.
