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Total time taken by a laser beam to retu...

Total time taken by a laser beam to return to earth after reflection from moon is 2.56 s. Calculate distance of moon from earth.

A

`3.84 x 10^5 km`

B

`8.34 x 10^5 km`

C

`4.83 x 10^5 km`

D

`3.48 x 10^5 km`

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