Q. 274.8( 5 Votes )

The distance of a

Answer :

Given:


Distance of galaxy from earth = 1025 m


We know that the speed of light in vacuum or space is 3 x 108 m/s.


Therefore, the time taken by light to reach earth from the galaxy can be calculated as follows




Therefore, the order of magnitude of time taken by light to reach is 1016s.


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