Stationary waves cannot be produced in:
Correct answer: B. Infinite long strings
- A. Long wires
- B. Infinite long strings
- C. Solid wires
- D. All of these
Explanation
A standing wave, also known as a stationary wave, is a wave that oscillates in time but whose peak amplitude profile does not move in space. It is produced by generating pulses on two points, such that it appears as a single wave. If there is no end, such that in an infinitely long wire, the pulse can not be reflected back and thus stationary waves can not be produced.
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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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