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A new unit of length is …

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A new unit of length is chosen such that the speed of light in vacuum is unity what is the distance between the sun and the earth in terms of the new unit if light takes 8 Minute and 20 second to cover this distance
  • 1 answers

Preeti Dabral 1 year, 11 months ago

The speed of light in vacuum (c) = 1 new unit of length s-1
Time taken by light to reach the Earth,
t = 8 min + 20s = (8 {tex}\times{/tex} 60 + 20) s = 500 s
{tex}\therefore{/tex} Distance between the Sun and the Earth
= Speed of light {tex}\times{/tex} Time
x = c {tex}\times{/tex} t = 1 new unit of length s-1 {tex}\times{/tex} 500 s
= 500 new units of length

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