4(iii)
The diagram below shows two parallel rays A (Orange) & B (Blue) incident from air, on air-glass boundary.
(a) Copy and complete the path of the rays A and B.
(b) How do the speeds of these rays differ in glass?
(c) Are the two refracted rays in glass parallel? Give a reason.
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(a) Ray B (Blue) will bend more than ray A (Orange) as shown in the diagram below:
(b) In glass, speed of orange (A) light is more than that of blue light (B).
(c) The two refracted rays are not parallel in glass as orange light with more speed bends less while blue light with slow speed bends more.