4. In a medium it has a refractive index of 1.18. Determine the speed of light in that medium. 5. A wave that has a long wave of 300 nm enters a medium that has an index of 1.54. Determine the wavelength in between. 6. We have a ray of light that falls at an angle of 40 degrees from normal. It goes from glycerin (n = 1,473) to quartz (n = 1,544). Determine the angle of refraction.
Using the formula of refractive index in terms of velocities and the wavelengths given above .
For finding the value of refraction angle ,use the Snell law
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