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Tutorial ID | Title | Tutorial | Video Tutorial | Revision Notes | Revision Questions | |
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22.8 | Orientation in the Sky and Constellations |
1. The angle formed by a star to Earth direction has changed by 45° during two observations made. If the first observation was made at 11.30 PM, at what time the second observation is made?
Correct Answer: D
2. The values of declination and right ascension of a star at a certain instant of the night are 40° North and 10 h West respectively. What will be the horizontal coordinates of the same star after 4 hours? (Consider the fact that the celestial sphere rotates from East to West)
Correct Answer: C
3. A star is actually on its zenith in the sky. When it will be at nadir for the first time after this event?
Correct Answer: A
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