WAEC Physics 2020 Objective — Question 41
Question 41 of 50 from the West African Examinations Council (WAEC) Physics 2020 Objective paper, with the correct answer and a full explanation.
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A ray of light travels obliquely from a less dense medium to a denser medium. Which of the following statements is true about the light?
- A. The wavelength of the light increases in the second medium
- B. The speed of the light increases in the second medium
- C. The light refracts towards the normalCorrect
- D. There is a change in the frequency of the light
Explanation
When light travels from a less dense medium to a denser medium: the light refracts toward the normal; the wavelength of the light decreases in the second medium; the speed also decreases in the second medium; frequency remains unchanged.
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