In stationary waves:
Correct answer: A. There is no net transfer of energy
- A. There is no net transfer of energy
- B. Energy is evenly distributed at all points
- C. Phase is the same for all points
- D. Both (a) & (b)
Explanation
In stationary waves, there is no net transfer of energy because the waves are confined, oscillating back and forth within a fixed region. This causes energy to transfer between nodes and antinodes without progressing through the medium. The correct option, therefore, is that there is no net transfer of energy. Option B is incorrect because energy is not evenly distributed; it varies with position. Option C is incorrect because the phase is not uniform; it changes across the wave. Option D is incorrect because it inaccurately suggests both A and B are correct.
This question appeared on the ETEA MDCAT 2016 paper, which you can sit online with every answer explained.
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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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