Two identical waves moving in opposite directions overlap to form:
Correct answer: B. Stationary wave
- A. Progressive wave
- B. Stationary wave
- C. Transverse wave
- D. Longitudinal wave
Explanation
Stationary (standing) waves are produced when two waves of the same frequency and amplitude travel in opposite directions and interfere.
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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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