We know that ,refractive index(n) is inversly proportional to the velocity (v) of light and also is inversely proportional to the wavelength.
This implies that....VELOCITY OF LIGHT IS DIRECTLY PROPORTIONAL TO THE WAVELENGTH
So the medium 'C' will have maximum velocity of light....which is at an angle of 40°
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We know that ,refractive index(n) is inversly proportional to the velocity (v) of light and also is inversely proportional to the wavelength.
This implies that....VELOCITY OF LIGHT IS DIRECTLY PROPORTIONAL TO THE WAVELENGTH
So the medium 'C' will have maximum velocity of light....which is at an angle of 40°