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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 min and 20 s to cover this distance?

$\begin {array} {1 1} (A)\;200\: units & \quad (B)\;500\: units \\ (C)\;300\: units & \quad (D)\;400\: units \end {array}$

1 Answer

Ans : (B)
500 units
answered May 28, 2014 by thanvigandhi_1
edited May 28, 2014 by thanvigandhi_1
 

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