cse • paper_1 • mechanics
[UPSC CSE 2021] Special Theory of Relativity (Q334, 10M)
An observer detects two explosions, one that occurs near him at a certain time and another that occurs 2\,\mathrm{ms} later 100\,\mathrm{km} away. Another observer finds that the two explosions occur at the same place. What time interval separates the explosions to the second observer?
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