Standing Waves
Standing Waves: Overview
This topic covers concepts such as Standing Waves, Equation of Standing Waves, Nodes and Antinodes in Standing Waves, Open Organ Pipe, Fundamental Frequency of Open Organ Pipe, Harmonics and Overtones in Open Organ Pipe, etc.
Important Questions on Standing Waves
In a sonometer wire the tension is maintained by suspending a 50.7 kg mass from the free end of the wire. The suspended mass has volume of 0.0075m3. The fundamental frequency of the wire is 260Hz. Find the new fundamental frequency if the suspended mass is completely submerged in water



How are stationary waves formed in closed pipes and open pipes? Explain the various modes of vibrations and obtain relation for their frequencies.

In case of a closed organ pipe which harmonic is the overtone will be

As an empty vessel is filled with water, its frequency:

An open pipe of length resonates with frequency of . If the speed of sound is , then this frequency is:

An organ pipe closed at one end vibrating in its first overtone and another pipe open at both ends vibrating in its third overtone are in resonance with a given tuning fork. The ratio of the length of to that of is:

A closed organ pipe of length and an open organ pipe contain gases of densities respectively. The compressibility of gases is same in both the pipes which are vibrating in their first overtone with same frequency. The length of the open organ pipe is:

A frequency of a sonometer wire is . When, after making length of its wire twice, the tension is increased, then its frequency becomes . The ratio of its initial and final tension is:

The equation of a standing wave is , where , a are in , in second and in metre. The velocity of the progressive waves producing it is:

In a standing wave of frequency , the distance between a node and the adjacent antinode is . The velocity of the component waves is:

A wave of frequency is sent towards the fixed end of a wire. When the wave returns after reflection, then a node is formed at a distance of 10 cm from the fixed end. The velocity of the incident (or reflected) wave is:

What type of vibration are produced in a Sonometer wire?

The displacement y of a particle executing periodic motion is given This expression may be considered to be a result of the superposition of :

Tube has both ends open while tube has one end closed. Otherwise, they are identical. The ratio of fundamental frequency of tube and is,

A wave of frequency is sent along a string towards a fixed end. When this wave travels back, after reflection, a node is formed at a distance of from the fixed end of the string. The speeds of incident (and reflected) waves are

A resonance pipe is open at both ends and of its length is in resonance with an external frequency . If the speed of sound is , which harmonic is in resonance?

For the stationary wave , the distance between a node and the next antinode is

The second overtone of an open pipe is in resonance with the first overtone of a closed pipe of length 2m. length of the open pipe is
