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प्रश्न
One parsec is defined as ______.
पर्याय
The distance light travels in one year
The average distance between Earth and the Sun
The distance at which 1 AU subtends an angle of 1 arcsecond
One thousand astronomical units
MCQ
रिकाम्या जागा भरा
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उत्तर
One parsec is defined as the distance at which 1 AU subtends an angle of 1 arcsecond.
Explanation:
The word "parsec" comes from "parallax second." It is the distance at which the radius of Earth's orbit (1 AU) subtends an angle of 1 arcsecond. 1 parsec = 3.08 × 10¹⁶ m.
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