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Find the angle thetaa made by the light...

Find the angle `theta_a` made by the light ray when it gets refracted from water to air, as shown in Fig .

Text Solution

Verified by Experts

Snell's law: `mu_w sintheta_w=mu_asintheta_a`
`4/3xx3/5=1 sin theta_a`
`sintheta_a=4/5` or `theta_a=sin^(-1) (4)/(5)`
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