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# Critical angle of glass is  θ1 and the critical angle of water is θ2. Calculate the critical angle for water and glass surface. (μg = 3/2, μw = 4/3)

Prudhvi teja
83 Points
10 years ago

Dear kaushik

The critical angle is the angle of incidence above which total internal reflection occurs. The angle of incidence is measured with respect to the normal at the refractive boundary. The critical angle θc is given by:

$\theta_c = \arcsin \left( \frac{n_2}{n_1} \right),$
critical angle = arcsin(4/3 / 3/2) = 62.73 degres

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Prudhvi Teja

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arjun murali
18 Points
8 years ago

can the answer be explained in any other proper way........cause i am not satisfied with that solution :(