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Question

The appropriate unit for measuring the distance of stars from the earth is:


A

Kilometre

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B

Mega-metre

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C

Light year

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D

Millimetre

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Solution

The correct option is C

Light year


The distance traveled by light in one year in a vacuum is called one light year. The light travels at a speed of 3×108 meters per second and one light year = 9.46×1012 km. The appropriate unit for measuring the distance of stars from the earth is lightyears.


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