A ray of light passes through a rectangular glass slab. If the angle of incidence at which the ray enters the glass slab is 30°, write the values of angle of emergence and angle of deviation?
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Answer:
1Light falling perpendicularly on glass slab
Explanation:
When light falls perpendicularly or normally on the surface of a glass slab, it goes straight. There is no bending of ray of light on entering the glass slab or coming out of it. In this case angle of incidence and angle of refraction is zero
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