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A laser light beamed at themoonthe takes2.56 sto returnafter reflectionat the moon's surface . How much isthe radius of thelunar orbit around the earth ? |
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Answer» SOLUTION : `t=2.56s` `therefore` t = time taken by laser beam to go to the moon = `(t)/(2)` distance between EARTH and moon `=d=cxx(t)/(2)` `=3XX10^(8)xx(2.56)/(2)` `=3.84xx10^(8)m`. |
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