When waves travel from air to glass, which of these remains the same:
Correct answer: C. Frequency
- A. Velocity
- B. Wavelength
- C. Frequency
- D. All of these
Explanation
When waves travel from one medium to another, their frequency remains constant, regardless of the change in the velocity and wavelength, provided there is no change in the medium.
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About Waves
Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
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