Question

What is the critical angle for the interface between water and fused quartz? nquartz= 1.46, nwater= 1.33.

Answer 1

The critical angle for the interface between water and fused quartz is 1.097.

What is the critical angle?

It is the greatest angle at which the ray of light travelling in a transparent medium can strike the boundary

By the formula of critical angle

$\theta _C = arcsin( \dfrac {n_2}{n_1} )$

Given, n quartz is 1.46 and n water is 1.33.

Putting the value in the equation

$\theta _C = arcsin( \dfrac {1.46}{1.33} ) = 1.097$

Thus, the critical angle for the interface between water and fused quartz is 1.097.

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