Скачать или смотреть JEE Advance 2022 Solution || Ray Optics || P2/Q5 ||

Consider a configuration of n identical units, each consisting of three layers. The first layer is a column of air of height 𝒉=𝟏/𝟑 cm, and the second and third layers are of equal thickness d = (√𝟑−𝟏)/𝟐 cm, and refractive indices 𝝁_𝟏 = √(𝟑/𝟐) and 𝝁_𝟐=√𝟑, respectively. A light source O is placed on the top of the first unit, as shown in the figure. A ray of light from O is incident on the second layer of the first unit at an angle of  = 60° to the normal. For a specific value of n, the ray of light emerges from the bottom of the configuration at a distance 𝒍 = 𝟖/√𝟑 cm, as shown in the figure. The value of n is _____.
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