A laser beam aimed at the moon takes 2.56 sec to return after reflection at moon's surface. Find the radius of lunar orbit.
Kindly refer to the link given below to get your answer :
https://www.meritnation.com/ask-answer/question/a-laser-is-a-source-of-very-intense-monochromatic-and-u/units-and-measurements/6327828
https://www.meritnation.com/ask-answer/question/a-laser-is-a-source-of-very-intense-monochromatic-and-u/units-and-measurements/6327828