When a transverse wave is reflected on going from a denser to a rarer medium, then:
Correct answer: C. There is no change in phase shift
- A. There is 180o phase shift
- B. A crest is converted into trough
- C. There is no change in phase shift
- D. Both A and B
Explanation
When a transverse wave is reflected from a rarer medium or a denser medium, there is no change of phase in either case. So there is no change of the particle velocity.
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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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