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Light is incident normally on face AB of a prism as shown in figure. A liquid of refractive index u is placed on face AC of the prism. The prism is made of glass of refractive index 3/2. The limits of mu for which total internal reflection takes place on face AC is |
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Answer» SOLUTION :Critical angle between glass and liquid face is `sin theta_C = (mu )/(3/2)= ( 2MU )/(3) ` Angle of INCIDENCE at face AC is `60^@`.  For the TIR to TAKES place at the face AC, the angle of incidence at the face AC, `i gt theta_C`, `60^@ gttheta_Corsin 60 ^@gt ( 2mu )/(3 )or mu lt (3 sqrt(3))/(4)` |
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