the speed of light in air is 3 into 10power 8 Hindi medium X speed is 2 into 10 ki power 8 metre per second and in medium with the speed of light is 2.5 into 10 ki power 8 metre per second calculate refractive index of medium vi without respecting medium x
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Everything seems impossible before it is done. So start the impossible now, you will see that it has become possible.
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