MEDIUM
11th ICSE
IMPORTANT
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An open pipe is suddenly closed at one end with the result that the frequency of third harmonic of the closed pipe is found to be higher by 100 Hz than the fundamental frequency of the open pip is:

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Important Questions on Superposition of Waves-2 : Stationary (Standing) Waves : Vibration of Air Columns

MEDIUM
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 31 - Superposition of Waves-2 : Stationary (Standing) Waves : Vibration of Air Columns>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 25
The frequencies of the first overtone of a closed and an open organ pipe are equal. The lengths of the pipes are in the ratio:
MEDIUM
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 31 - Superposition of Waves-2 : Stationary (Standing) Waves : Vibration of Air Columns>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 26

The fundamental frequency of an open organ pipe is 300 Hz. The first overtone of this pipe is the same as the first overtone of a closed organ pipe. If the speed of sound be 330 ms-1 then the length of the closed organ pipe is:

MEDIUM
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 31 - Superposition of Waves-2 : Stationary (Standing) Waves : Vibration of Air Columns>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 27
An open pipe resonates in its second harmonic with frequency f1. One end of the pipe is closed and the frequency is slowly raised until this pipe resonates in its n th harmonic with frequency f2. Then:
MEDIUM
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 31 - Superposition of Waves-2 : Stationary (Standing) Waves : Vibration of Air Columns>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 28
An open pipe of length 33 cm resonates with frequency of 1000 Hz . If the speed of sound is 330 m/s, then this frequency is:
HARD
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 31 - Superposition of Waves-2 : Stationary (Standing) Waves : Vibration of Air Columns>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 29
An organ pipe  P1 closed at one end vibrating in its first overtone and another pipe P2 open at both ends vibrating in its third overtone are in resonance with a given tuning fork. The ratio of the length of P1 to that of P2 is:
MEDIUM
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 31 - Superposition of Waves-2 : Stationary (Standing) Waves : Vibration of Air Columns>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 30
A closed organ pipe of length L and an open organ pipe contain gases of densitiesρ1  and ρ2 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:
MEDIUM
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 31 - Superposition of Waves-2 : Stationary (Standing) Waves : Vibration of Air Columns>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 31
In a closed organ pipe is produced the third overtone. We find in the pipe:
MEDIUM
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 31 - Superposition of Waves-2 : Stationary (Standing) Waves : Vibration of Air Columns>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 32
A glass tube of 1.0 m  length is filled with water. The water can be drained out slowly at the bottom of the tube. If a vibrating tuning fork of frequency 500 Hz is brought at the upper end of the tube and the velocity of sound is 300 m/s then the total number of resonances obtained will be: