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Measuring Length

Parallactic s...

Question

Parallactic second is a unit of :

A

time

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B

speed

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C

distance

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D

none of these

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Solution

The correct option is C distance
Parallactic second is a unit of distance in astronomy. It is used to measure the astronomical large distances to objects outside the solar system.
$1$ parallactic second $≃ 3.085 \times 10^{13} k m$

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