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| Q. |
'Parsec' is the unit measurement of – |
| A. | Density of stars |
| B. | Astronomical distance |
| C. | Brightness of heavenly bodies |
| D. | Orbital velocity of giant stars |
| Answer» B. Astronomical distance | |
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Explanation: Parsec is a unit of distance used in astronomy to measure large distances to objects outside our Solar System. It is equal to about 3.26 light years (3.086 x 1013 kilometres). |
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