26.A prism of Refractive index is 1.5 is immersed in water of refractive index is 4/3.for the total internal reflection is ---------------

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Solution

Critical angle for total internal reflection:

$\sin C = \frac{μ_{w}}{μ_{g}} = \frac{4 / 3}{3 / 2} = \frac{8}{9} C = \sin^{- 1} (\frac{8}{9})$

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26.A prism of Refractive index is 1.5 is immersed in water of refractive index is 4/3.for the total internal reflection is ---------------

Critical angle for total internal reflection: sin C =μwμg =4/33/2 =89C =sin-189

Critical angle for total internal reflection:

$\sin C = \frac{μ_{w}}{μ_{g}} = \frac{4 / 3}{3 / 2} = \frac{8}{9} C = \sin^{- 1} (\frac{8}{9})$