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A long rectangular slab of transparent medium of thickness 'd' placed on a table with its length parallel to the x-axis and width parallel to the y-axis. A ray of light travelling in air makes a near normal incidence on the slab as shown. Taking the point of incidence as origin (0,0,0). The refraction index mu of the medium varies as mu = (mu_0)/(1 - (x/r)),where mu_1 andr( > d) are constants. The refractive index of air is m_0The refractive index mu_A of the medium at A |
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Answer» `(mu_0)/(SQRT(1-(d/r)^2))` |
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