Standing Waves
Physics ⇒ Waves and Sound
Standing Waves starts at 10 and continues till grade 12.
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See sample questions for grade 12
A 2.0 m long string is fixed at both ends and vibrates in its fundamental mode. If the speed of the wave is 100 m/s, what is the fundamental frequency?
A pipe closed at one end has a length of 0.85 m. If the speed of sound in air is 340 m/s, what is the fundamental frequency?
A pipe open at both ends has a length of 1.5 m. If the speed of sound is 330 m/s, what is the frequency of the second harmonic?
A string of length 0.5 m is vibrating in its fourth harmonic. How many nodes (including the ends) are present?
A string of length 1.2 m is fixed at both ends. If the speed of the wave on the string is 60 m/s, what is the frequency of the second harmonic?
Describe how a standing wave is formed on a string fixed at both ends.
Describe the boundary conditions for a standing wave in a pipe closed at one end and open at the other.
Explain the difference between a node and an antinode in a standing wave.
Explain why a node is always present at the closed end of a pipe closed at one end.
Explain why only certain frequencies produce standing waves on a string fixed at both ends.
If the length of a string is doubled, what happens to the fundamental frequency, assuming the wave speed remains constant?
The fundamental frequency of a pipe open at both ends is 200 Hz. What is the frequency of its third harmonic?
The third harmonic of a string fixed at both ends has a frequency of 300 Hz. What is the fundamental frequency?
