Q41 of 284 Page 221

How is the reflection of light ray from a plane mirror different from the refraction of light ray as it enters a block of glass?

the reflection of light ray from a plane mirror different from the refraction of light ray as when a ray of light enters a block of plane mirror the angle of reflection is equal to the angle of incidence but the angle of refraction is not equal to the angle of incidence when it enters a block of glass.


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39

Which of the following diagrams shows the ray of light refracted correctly?


 40

A vertical ray of light strikes the horizontal surface of some water:

(a) What is the angle of incidence?


(b) What is the angle of refraction?

 42

How does the light have to enter the glass?

(a) To produce a large amount of bending?


(b) For no refraction to happen?

 43

How can you bend light away from the normal?