CUET · PHYSICS · PYQ PAPER 2025
If a wave gets refracted into a denser medium, which of the following is true?
- A frequency, wavelength and speed increase
- B frequency, wavelength and speed decrease
- C frequency remains constant but wavelength decreases and speed increases
- D frequency remains the same but both wavelength and speed decrease
Answer & Solution
Correct Answer
(A) frequency, wavelength and speed increase
Step-by-step Solution
Detailed explanation
The provided solution (A) is actually incorrect. When a wave enters a denser medium, its frequency remains constant because it is determined by the source, but its speed and wavelength both decrease. Therefore, the correct answer should be (D), as the wave slows down in a denser…
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