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 min and 20 s to cover this distance?

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Dist= speed×time Dist= unity× 8min +20 secs Dist= unity×500secs D= 500 unity secs
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Tutor

Hey, should be easy, Distance= Speed * Time So, Dist=1 xs^-1 * (8*60+20)s 500x. x is the new unit of length post conversion.
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The speed of light in vacuum c = 1 length /s of new unit Time taken by light to reach the earth t = (8 × 60 +20) s = 480+20 =500 s Distant between the earth and the sun d= speed of light c× time t = 1× 500 =500 new unit of length
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The speed of light in vacuum c = 1 length /s of new unit Time taken by light to reach the earth t = (8× 60 +20) s = 480+20 =500 s Distant between the earth and the sun d= speed of light c× time t = 1× 500 =500 new unit of length read less
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