EASY
Earn 100
The ratio of frequencies of fundamental harmonic produced by an open pipe to that of closed pipe having the same length is:
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Important Questions on Superposition of Waves
MEDIUM
A closed organ pipe has a fundamental frequency of . The number of overtones that can be distinctly heard by a person with this organ pipe will be Assume that the highest frequency a person can hear is ).
MEDIUM
If sound travels in air with the speed of , then the number of tones present in an open organ pipe of length for a maximum frequency of , are
EASY
The fundamental frequency in an open organ pipe is equal to the third harmonic of closed organ pipe. If the length of the closed organ pipe is 20 cm, the length of the open organ pipe is
EASY
The fundamental frequency of an air column in a pipe closed at one end is . If the same pipe is open at both the ends, the frequencies produced in are
MEDIUM
A pipe open at both ends has a fundamental frequency in air. The pipe is dipped vertically in water so that half of it is in water. The fundamental frequency of the air column is now:
EASY
The fundamental frequency of a closed organ pipe of length is equal to the second overtone of an organ pipe open at both the ends. The length of the organ pipe open at both the ends is
EASY
An organ pipe long is open at both ends. The speed of sound in air is . The frequency of the second harmonic is _
EASY
A standing wave is formed by the superposition of two waves travelling in opposite directions. The transverse displacement is given by, . What is the speed of the travelling wave moving in the positive direction? ( and are in meter and second, respectively)
MEDIUM
Show that only odd harmonics are present as overtones in the case of an air column vibrating in a pipe closed at one end.
EASY
Two nearest harmonics of an organ pipe open at both the ends are and The fundamental frequency is
EASY
In sonometer experiment, the string of length under tension vibrates in second overtone between two bridges. The amplitude of vibration is maximum at
EASY
A cylindrical tube, open at both the ends has fundamental frequency . If one of the ends is closed, the fundamental frequency will become
HARD
Two uniform wires of the same material are vibrating under the same tension. If the first overtone of the first wire is equal to the second overtone of the second wire and radius of the first wire is twice the radius of the second wire then the ratio of the lengths of the first wire to second wire is
EASY
A string is stretched between fixed points separated by 75.0 cm. It is observed to have resonant frequencies of 420 Hz and 315 Hz. There are no other resonant frequencier between these two. The lowest resonant frequency for this string is:
MEDIUM
A pipe of length is closed at one end. Taking the speed of sound in air as , the air column in the pipe cannot resonate for the frequency
HARD
The total length of a sonometer wire fixed between two bridges is . Now, two more bridges are placed to divide the length of the wire in the ratio . If the tension in the wire is and the mass per unit length of the wire is , then the minimum common frequency with which all the three parts can vibrate, is
HARD
A pipe of length 85 cm is closed from one end. Find the number of possible natural oscillations of air column in the pipe whose frequencies lie below 1250 Hz. The velocity of sound in air is 340 m/s.
EASY
Tube has both ends open while tube has one end closed. Otherwise, they are identical. The ratio of fundamental frequency of tube and is,
EASY
The two nearest harmonics of a tube closed at one end and open at other end are 220 Hz and 260 Hz. What is the fundamental frequency of the system?
MEDIUM
The second overtone of an open organ pipe has the same frequency as the first overtone of a closed pipe which is meter long. The length of the open pipe will be
