Fill in the blankEasy1 mark
2(i)
Complete the following by choosing the correct answers from the bracket:
When a ray of light passes from a denser to a rarer medium, its wavelength ............... [decreases / increases].
Topic: Wavelength during refraction
Question wording verified against source paper
Answer
Exam answer
increases
Explanation
Frequency remains constant while speed increases in the rarer medium, so wavelength increases.
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