In vibrating cord the points where the amplitude is maximum, are called ___________________?
Correct answer: A. antinodes
- A. antinodes
- B. nodes
- C. troughs
- D. crests
Explanation
In a stationary wave, an antinode is a point where the particles vibrate with maximum amplitude, while a node remains at zero amplitude. Troughs and crests describe positions in a travelling wave, not the fixed maximum-amplitude points of a stationary wave. The likely mistake is choosing crests because they are also points of maximum displacement in a snapshot of a travelling wave.
Last updated
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.
Practise Waves
1,281 free Waves MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A 30-cm long string, with one end clamped and the other free to move transversely, is vibrating in its second harmonic. The wavelength of the constituent traveling waves is:
A first harmonic stationary sound wave is produced in the air of the cylinder, which is half-filled with water. More water is added to the cylinder, and now the first harmonic stationary wave is produced with a different frequency. What is the change in frequency and the nature of displacement in air at the water surface?
A longitudinal standing wave, in second harmonic mode, is established in a tube that is open at both ends. The length of the tube is 0.80m. What is the wavelength of the waves that make up the standing wave?
A standing wave pattern is formed when the length of string is an integral multiple of wavelength.
A "stationary wave" is formed in a pipe which is open at both ends. If two complete loops are formed and the wavelength of the wave is 10 cm, what is the length of the pipe?