Kelper used total internal reflection in a glass block to deflect a beam of light as shown in the figure. For an angle of the incidence i at the top surface, the minimum refractive index (n) needed for total internal reflection at the vertical surface is (the surrounding medium is air for which n=1)
Option B is correct
In the figure shown, for an angle of incidence 45^{\circ}at the top surface, what is the minimum refractive index needed for total internal reflection at vertical face
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
In the figure shown, for an angle of incidence 45° at the top surface, what is the minimum refractive index needed for total internal reflection at vertical surface?
In the figure given below, for an angle of incidence 45o at the top surface, what is the minimum refractive index need to total internal reflection at vertical face?