Question

the refractive index of glass is 1.5. From a point P
inside a glass slab, draw rays PA, PB and PC
incident on the glass-air surface at an angle of
incidence 30°, 42° and 60° respectively.
(a) In the diagram show the approximate direction
of these rays as they emerge out of the slab.
(b) What is the angle of refraction for the ray PB ?
(Take sin 42° )




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Answer 1

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