Applications Of Reflection Of Light
When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.
Sign Convention for Mirrors
A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.
As shown in Figure P35.73, a light ray is incident normal to one face of a 30°-60°-90° block of flint glass (a prism) that is immersed in water.
(a) Determine the exit angle θ3 of the ray.
(b) A substance is dissolved in the water to increase the index of refraction n2
. At what value of n2 does total internal reflection cease at point P?
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30.0
Figure P35.73"
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