When two identical traveling waves are superimposed, the velocity of the resultant wave__________________?
Correct answer: C. remains unchanged
- A. decreases
- B. increases
- C. remains unchanged
- D. becomes zero
Explanation
Superposition changes the displacement and amplitude of overlapping waves, but it does not change the wave speed because the speed is determined by the medium and its properties. Thus, the resultant wave travels with the same velocity as the original waves. The likely mistake is choosing becomes zero, by confusing cancellation of displacement with stopping the wave.
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About Superposition and Interference
Superposition states that overlapping waves produce a resultant displacement equal to the algebraic sum of their individual displacements. Interference covers constructive and destructive interference, phase difference, path difference, coherent sources, and conditions for maxima and minima. It differs from diffraction, which involves spreading around openings or obstacles.
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