GK
UNITS DEVICES DIMENSIONS AND MEASUREMENTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Time
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Energy
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Distance
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Temperature
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Detailed explanation-1: -The parsec is a unit of length used to measure vast distances between astronomical objects outside the Solar System. It is roughly equivalent to. light-years or astronomical units, or. trillion kilometers.
Detailed explanation-2: -A parsec is the distance-3.26 light-years-that a star must lie from the Sun for its parallax angle to be exactly 1 arcsecond (1/3600 of a degree).
Detailed explanation-3: -It is a unit of distance used in astronomy, equal to about 3.26 light years (3.086 × 1013 kilometres). One parsec corresponds to the distance at which the mean radius of the earth’s orbit subtends an angle of one second of arc.
Detailed explanation-4: -Parsec or parallactic second refers to the distance at which an arc of length equal to one astronomical unit subtends an angle of one second at a point. 1 parsec = 3 . 1 × 10 16 m = 3 . 26 light-years. 1 parsec is equivalent to 206265 AU and hence parsec is the largest unit of length.