WAEC Physics 2024 Objective — Question 7
Question 7 of 50 from the West African Examinations Council (WAEC) Physics 2024 Objective paper, with the correct answer and a full explanation.
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7. A ray of light travels from a less dense medium to a denser medium. How are the speed and frequency of the light affected? A.
- A. The speed increases and the frequency increases.
- B. The speed decreases and the frequency decreases.
- C. The speed increases and the frequency remains the same.
- D. The speed decreases and the frequency remains the same.Correct
Explanation
When light travels from one medium to another (of different refractive index), both the wavelength and the velocity will be altered but the frequency remains unchanged.
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