When a transverse wave, travelling in a rarer medium, encounters a denser medium, it _:
Correct answer: B. Bounces back such that the direction of its displacement is reversed
- A. Bounces back such that the direction of its displacement remains same
- B. Bounces back such that the direction of its displacement is reversed
- C. Travels into second medium and the direction of its displacement is reversed
- D. Travels into second medium and the direction of its displacement remains same
Explanation
When a transverse wave, traveling in a rarer medium, encounters a denser medium, it undergoes reflection. The reflected wave travels back into the rarer medium with the same speed and frequency as the incident wave, but the direction of its displacement is reversed. This is because the density change at the boundary causes a phase change in the wave, which in turn changes the direction of the wave's displacement.
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Progressive waves transfer energy through a medium or space while particles oscillate about their equilibrium positions. The work includes amplitude, wavelength, frequency, period, phase difference, wave speed and the progressive wave equation, while distinguishing travelling waves from stationary waves, where the pattern has fixed nodes and antinodes.
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