Question

A new unit of length is chosen so that the speed of light in vacuum is 1 ms⁻². If light takes 8 minutes and 20 seconds to cover this distance, what is the distance between the sun and earth in terms of the news unit?

Answer 1

Hii dear,

# Answer - 500 m.

# Explaination-
Total time required to cover distance = 8 min 20 sec = 500 sec.
Suppose light travels at a speed of 1 m/s.
Hence,
Distance covered = speed × time
Distance covered = 1 × 500
Distance covered = 500 m.

Hence, according to new system of units, distance between sun and earth is 500m.

Hope that helped you.
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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

I hope, this will help you

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