The light beam of wavelength 550 nm in vacuum travels with a speed of 2.55*10^8 m/s and makes an angle 0f 20 inside the layer of coconut oil with the normal NN' at the oil-glass boundary. (c=3*10^8 m/s) 1) find the refractive index of coconut oil.

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anonymous · Answer

The only information you need to find the refrective index of the oil is the speed of the light in the oil and the speed of light in vacuum. just look at the first paragraph here http://en.wikipedia.org/wiki/Refractive_index