EASY
Earn 100

Draw a diagram of standing wave formed inside the organ pipe with both ends closed for first harmonic.

Important Questions on Waves

MEDIUM

A pipe closed at one end has length 83 cm. The number of possible natural oscillations of air column whose frequencies lie below 1000 Hz are (velocity of sound in air =332 m s-1

MEDIUM

For a certain organ pipe, three successive resonance frequencies are observed at $425 \mathrm{Hz}$, $595 \mathrm{Hz}$ and $765 \mathrm{Hz}$, respectively. The length of the pipe is (speed of sound in air $=340 \mathrm{ms}^{-1}$)

MEDIUM
An organ pipe closed at one end, has the fundamental frequency of 1500 Hz. The maximum number of overtones generated by this pipe which a normal person can hear is
EASY

When open pipe is closed from one end then third overtone of closed pipe is higher in frequency by 150 Hz than second overtone of open pipe. The fundamental frequency of open end pipe will be

MEDIUM

A closed organ pipe of length $L$ and an open organ pipe contain gases of densities $\rho_{1}$ and $\rho_{2}$, respectively. The compressibility of gases are equal in both the pipes. Both the pipes are vibrating in their first overtone with same frequency. The length of the open organ pipe is,

HARD
An organ pipe, closed at one end, has fundamental frequency of 1500 Hz. The maximum number of overtones generated by this pipe which a normal person can hear is
EASY

The two nearest harmonics of a tube closed at one end and open at other end are  220 Hz &260 Hz What is the fundamental frequency of the system?

MEDIUM
An air column in a closed pipe will be in resonance with a vibrating tuning fork of frequency 264 Hz, if the length of the column (in cm) is: ( the velocity of the sound in air is 340 m/s).
 
EASY

What is the base frequency, if a pipe gives notes of frequencies $255$, $425$ and $595$ Hertz and decide whether it is closed at one end or open at both ends?

EASY
An organ pipe of length L is opened at one end and closed at the other end. The wavelengths of the three lowest resonating frequencies that can be produced by this pipe are
EASY
The length of an open organ pipe is twice the length of another closed organ pipe. The fundamental frequency of the open pipe is 100Hz. The frequency of the third harmonic of the closed pipe is
EASY

Fifth overtone of closed organ pipe is in unision with fifth overtone of open organ pipe. The ratio of their lengths is,

MEDIUM
On producing the waves of frequency 1000 Hz in a Kundt's tube, the total distance between 6 successive nodes is 85 cm. Speed of sound in the gas filled in the tube is
EASY

If the length of a closed organ pipe is $1.5 \mathrm{m}$ and velocity of sound is330 m s-1 then the frequency for the second note is

MEDIUM
An open pipe is suddenly closed with the result that the second overtone of the closed pipe is found to be higher in frequency by 100 Hz than the first overtone of the original pipe. The fundamental frequency of the open pipe will be
MEDIUM

A source of frequency 340 Hz is kept above a vertical cylindrical tube closed at lower end. The length of the tube is 120 cm. Water is slowly poured in just enough to produce resonance. Then the minimum height (velocity of sound =340 m s-1 ) of the water level in the tube for that resonance is,

MEDIUM
In a resonance tube, the first resonance with a tuning fork occurs at 16 cm and second at 49 cm. If the velocity of sound is 330 m s-1, the frequency of tuning fork is _____Hz.
MEDIUM
Select the correct alternative (s) :
A student performed the experiment to measure the speed of sound in air using resonance air- column method. Two resonances in the air-column were obtained by lowering the water level. The resonance with the shorter air-column is the first resonance and that with the longer air-column is the second resonance. Then :
EASY
If the fundamental frequency of a pipe closed at one end is 512 Hz, the fundamental frequency of a pipe of the same dimensions but open at both ends will be,
MEDIUM

The second overtone of an open organ pipe has the same frequency as the first overtone of a closed pipe $L$ metre long. The length of the open pipe will be,