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(A) The critical angle $C$ is given by $C = \sin^{-1}(1/\mu)$.According to Cauchy's equation,the refractive index $\mu$ is inversely proportional to t

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Yellow,orange,red

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(A) The critical angle $C$ is given by $C = \sin^{-1}(1/\mu)$.According to Cauchy's equation,the refractive index $\mu$ is inversely proportional to the wavelength $\lambda$ (i.e.,$\mu \propto 1/\lambda$).Since the wavelength of yellow,orange,and red light is greater than that of green light,their refractive index $\mu$ will be lower.Consequently,the critical angle $C$ for these colors will be higher than that of green light.If green light is just totally internally reflected (i.e.,the angle of incidence equals the critical angle for green),then for colors with a higher critical angle (yellow,orange,red),the angle of incidence will be less than their respective critical angles.Therefore,yellow,orange,and red rays will refract and emerge out into the air.

White light is incident on the interface of glass and air as shown in the figure. If green light is just totally internally reflected,then the emerging ray in air contains:

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