Question

The pulse of light is emitted from two sources positioned at x1 =0 and x2 = 5 km in S frame. The
first light signal gets emitted at t1 =0 sec, while the other light signal gets emitted at t2 = 5 μs.
However, both signals appear to be simulaneous to an observer in S’ frame who is moving with a
constant speed making an angle of 45 degree with x-direction. What will be the speed of the
observer in S’ frame? Now, assume that there is another observer in S’’ frame moving in x-direction,
with the speed same as the speed of the S’ frame observer along x-axis. What will be the exact time
difference between the emission of these light events in the watch of the observer in S’’ frame.

Answer 1

Answer:

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