A monochromatic light is incident from air on a refracting surface of a prism of angle 75o and refractive index n0=√3. The other refracting surface of the prism is coated by a thin film of material of refractive index n as shown in figure. The light suffers total internal reflection at the coated prism surface for an incidence angle of θ≤60o. The value of n2 is .

A monochromatic light is incident from air on a refracting surface of

1.	A monochromatic light is incident from air on a refracting surface of a prism of angle 75o and refractive index n0=√3. The other refracting surface of the prism is coated by a thin film of material of refractive index n as shown in figure. The light suffers total internal reflection at the coated prism surface for an incidence angle of θ≤60o. The value of n2 is .
Answer» A monochromatic light is incident from air on a refracting surface of a prism of angle $75^{o}$ and refractive index $n_{0} = \sqrt{3}$ . The other refracting surface of the prism is coated by a thin film of material of refractive index n as shown in figure. The light suffers total internal reflection at the coated prism surface for an incidence angle of $θ \leq 60^{o}$ . The value of $n^{2}$ is .

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