Superposition of two waves having same frequency, same amplitude and travelling in the opposite direction, is called:
Correct answer: D. Stationary waves
- A. Interference
- B. Diffraction
- C. Beats
- D. Stationary waves
Explanation
Option A : The net effect of the combination of two or more wave trains moving on intersecting or coincident paths. The effect is that of the addition of the amplitudes of the individual waves at each point affected by more than one wave.Option B : Diffraction is the spreading of waves around obstacles. Option C : In acoustics, a beat is an interference pattern between two sounds of slightly different frequencies, perceived as a periodic variation in volume whose rate is the difference between the two frequencies. With tuning instruments that can produce sustained tones, beats can be readily recognized. Option : DWhenever two waves with almost similar frequencies, wavelengths, and amplitude travelling throughout opposing orientations collide, a standing wave is formed.
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About Stationary Waves
Stationary waves form when two waves of the same frequency and amplitude travel in opposite directions and interfere. The topic covers nodes, antinodes, wavelength, phase, resonance, and the allowed frequencies on strings and in air columns. Unlike progressive waves, stationary waves do not transfer energy from one point to another.
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