One astronomical unit is equal to:
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1.496 x 1011 metre
Reason — One astronomical unit is equal to the mean distance between the earth and the sun. i.e.,
1 A.U. = 1.496 x 1011 metre
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The fundamental unit is —
Which of the following unit is not a fundamental unit:
The distance of stars from earth is generally measured in:
The unit of time is: