Question

A new unit of length is chosen such that the speed of light in vacuum is unify.find the distance between the sun and the earth

Answer 1

8 units is the answer. So it is basically about 8 light minutes.

Answer 2

Speed of light = 1m/s (according to the new system)

Time to cover Distance between earth and sun for light is 8min 20sec.

Converting 8 min 20 sec to seconds we get

500sec

We know that 1m per sec is the speed so for 500 sec it is 500 metres.

(Unitary method)

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