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The diagram below shows two parallel rays A (Orange) and B (Blue) incident from air, on air-glass boundary. Copy and complete the path of the rays A and B.

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Question

The diagram below shows two parallel rays A (Orange) & B (Blue) incident from air, on air-glass boundary.

  1. Copy and complete the path of the rays A and B.
  2. How do the speeds of these rays differ in glass?
  3. Are the two refracted rays in glass parallel? Give a reason.
Answer in Brief
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Solution


  1. In glass, speed of orange (A) light is more than that of blue light (B).
  2. No, the two refracted rays are not parallel to each other as their speeds vary in the glass.
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