When a ray of light enters from air to the triangular glass prism then it emerges out of the prism.In this situation :
a)
b)
c)
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Its emerges as spectrum.The white light is converted in the seven colours of the rainbow i.e. VIBGYOR
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The light rays refract inside the prism at both the faces on which the light rays fall.
If the light rays consist of multiple frequencies, like white light, then the rays refract and deviate differently. So the phenomenon of dispersion of light happens. The seven components of white light are shown.
The light rays deviate from the incident ray : with angle of deviation D and angle of prism A related as follows.
μ = refractive index of prism = Sin (A+D)/2 / Sin A/2
If the light rays consist of multiple frequencies, like white light, then the rays refract and deviate differently. So the phenomenon of dispersion of light happens. The seven components of white light are shown.
The light rays deviate from the incident ray : with angle of deviation D and angle of prism A related as follows.
μ = refractive index of prism = Sin (A+D)/2 / Sin A/2
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