Post-UTME Physics 2018 Objective — Question 10
Question 10 of 20 from the Post-UTME Screening (Post-UTME) Physics 2018 Objective paper, with the correct answer and a full explanation.
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Which of the following is CORRECT when light wave enters an optically denser medium? I. The wavelength increases. II. The wavelength decreases. III. The frequency remains constant.
- A. I only
- B. III only
- C. I and III only
- D. II and III onlyCorrect
Explanation
When light enters a denser medium, it slows down, causing the wavelength to decrease, while frequency remains constant.
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