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| 1. |
time taken by monochromatic light to travel a certain dis†an ce in air is 9×10^-6 sec.time taken by light ray to travel the same dis†an ce in water of refractive index 4/3 is |
| Answer» time taken by monochromatic light to travel a certain dis†an ce in air is 9×10^-6 sec.time taken by light ray to travel the same dis†an ce in water of refractive index 4/3 is | |