Q.

 Parsec is the unit to measure 

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a

Time

b

Distance

c

Moment of inertia

d

Impulse

answer is B.

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Detailed Solution

One parsec is defined as the distance to an object whose parallax angle is equal to one arcsecond. A parsec is equal to 3.26 light years and because a light year the distance light travels 9.4 trillion km in one year, 1 parsec is equal to 30.8 trillion km.

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 Parsec is the unit to measure