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| Tutorial ID | Title | Tutorial | Video Tutorial | Revision Notes | Revision Questions | |
|---|---|---|---|---|---|---|
| 22.6 | Galaxies and Hierarchic Structures in the Universe |
1. What is the revolution speed of Sun around the centre of Milky Way galaxy? Take 1 light year = 9.46 × 1012 km.
Correct Answer: C
2. The diameter of Local Group is about 10 million light years. What part of diameter would the galaxies contained in this group occupy if all galaxies had the dimensions of Milky Way and all of them were aligned in a row?
Correct Answer: A
3. How far from the Sun is the closest periphery of Milky Way bulb?
Correct Answer: D
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