When path difference between two waves are odd integral multiple of half the wavelength, the resultant effect is called:
Correct answer: A. Destructive interference
- A. Destructive interference
- B. Constructive interference
- C. Beats
- D. Diffraction
Explanation
Destructive interference occurs when two waves with opposite phases (180 degrees out of phase) combine. In this case, the crests of one wave align with the troughs of the other wave, resulting in a cancellation of amplitudes. As a result, the resultant wave has a smaller amplitude or even zero amplitude at certain points.This phenomenon is commonly observed in various wave systems, such as sound waves, light waves, and water waves. It is characterized by the reduction or complete elimination of wave amplitudes at specific locations where destructive interference occurs.
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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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