A wave reflects upon itself
The amplitude of a wave exceeds its wavelength
Two waves overlap
The speed of the wave is zero or near zero
Answer is Right!
Answer is Wrong!
The correct answer is A. A wave reflects upon itself.
A standing wave is a wave that appears to stand still. It is formed when two waves of the same frequency and amplitude travel in opposite directions and interfere with each other. The points where the waves meet and cancel each other out are called nodes, and the points where the waves reinforce each other are called antinodes.
Option B is incorrect because the amplitude of a wave does not affect whether or not a standing wave is formed.
Option C is incorrect because two waves do not need to overlap in order to form a standing wave.
Option D is incorrect because the speed of a wave does not affect whether or not a standing wave is formed.