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Physics, 23.08.2019 03:30 monsterwins292

2. an optical fibre is 1200km long and it takes light 0.006s to travel from one end to the other. calculate the speed of light in glass.
2. an optical fibre is 1200km long and it takes light 0.006s to travel from one end to the other. calculate the speed of light in glass.

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