Short answerEasy1 mark
4(iii)
The diagram below shows two parallel rays A (Orange) & B (Blue) incident from air, on air-glass boundary.
How do the speeds of these rays differ in glass?
Topic: Speed of colours in glass
Question wording verified against source paper
Answer
Exam answer
Blue light travels more slowly than orange light in glass.
Explanation
Higher refractive index means lower speed.
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