Question

A new unit of length is chosen such that the speed of light in vaccum is unity .

what is the distance between the sun sun and the earth in terms of a new unit if light takes 8 min and 20s to cover this distance?

Answer 1

It's right answar 3.8 into ten to the power eight meter per second

Answer 2

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Distance between the Sun and the Earth: = Speed of light × Time taken by light to cover the distance

Given that in the new unit,

speed of light = 1 unit

Time taken, t = 8 min 20 s = 500 s

Distance between the Sun and the Earth = 1 × 500 = 500 units

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