Part 1
If man were standing unsymmetrically between parallel cliffs, claps his hands and starts hearing a series of echoes at intervals of 1s. If speed of sound in air is 340ms^−1, the distance between two cliffs would be
12
Nov
If man were standing unsymmetrically between parallel cliffs, claps his hands and starts hearing a series of echoes at intervals of 1s. If speed of sound in air is 340ms^−1, the distance between two cliffs would be claps his hands and starts hearing a series of echoes at intervals of 1s. If speed of sound [...]
A source is moving towards a stationary observer, so that the apparent frequency increases by 50%. If velocity of sound is 330 m/s, then velocity of source is
12
Nov
A source is moving towards a stationary observer, so that the apparent frequency increases by 50%. If velocity of sound is 330 m/s, then velocity of source is A source is moving towards a stationary observer so that the apparent frequency increases by 50%. If velocity of sound is 330 m/s then velocity of source [...]
A police car with a siren of frequency 8kHz is moving with uniform velocity 36km/hr towards a tall building which reflects the sound waves. The speed of sound in air is 320m/s. The frequency of the siren heard by the car driver is
12
Nov
A police car with a siren of frequency 8kHz is moving with uniform velocity 36km/hr towards a tall building which reflects the sound waves. The speed of sound in air is 320m/s. The frequency of the siren heard by the car driver is A car moving with velocity 50 m s towards a wall sounds [...]
A train approaching a railway crossing at a speed of 120kmh^−1 sounds a short whistle at frequency 640 Hz when it is 300 m away from the crossing. The speed of sound in air is 340ms^−1. What will be the frequency heard by a person standing on a road perpendicular to the track through the crossing at a distance of 400 m from the crossing ?
12
Nov
A train approaching a railway crossing at a speed of 120kmh^−1 sounds a short whistle at frequency 640 Hz when it is 300 m away from the crossing. The speed of sound in air is 340ms^−1. What will be the frequency heard by a person standing on a road perpendicular to the track through the [...]
A car moving with velocity 50 m s towards a wall sounds a horn of frequency of 1.2 kHz. The velocity of sound is 350 m/s, the apparent frequency of the echo heard by the driver is
12
Nov
A car moving with velocity 50 m s towards a wall sounds a horn of frequency of 1.2 kHz. The velocity of sound is 350 m/s, the apparent frequency of the echo heard by the driver is A car moving with velocity 50 m s towards a wall sounds a horn of frequency of 1.2 [...]
The frequencies of two tuning forks A and B are respectively 1.5% more 2.5% less than that of tuning fork C. When A and B sounded together, 12 beats are produced in 1 second. The frequency of tuning fork C is
12
Nov
The frequencies of two tuning forks A and B are respectively 1.5% more 2.5% less than that of tuning fork C. When A and B sounded together, 12 beats are produced in 1 second. The frequency of tuning fork C is 12 beats are produced in 1 second. The frequency of tuning fork C is [...]
Two uniform wires are vibrating simultaneously in their fundamental modes. The tensions, lengths, diameters and the densities of the two wires are in the ratio 8:1, 36:35, 4:1 and 1:2 respectively. If the note of the higher pitch has a frequency 360 hertz, the number of beats produced per second is:
12
Nov
Two uniform wires are vibrating simultaneously in their fundamental modes. The tensions, lengths, diameters and the densities of the two wires are in the ratio 8:1, 36:35, 4:1 and 1:2 respectively. If the note of the higher pitch has a frequency 360 hertz, the number of beats produced per second is: 36:35 4:1 and 1:2 [...]
Tags:
36:35 ,
4:1 and 1:2 respectively. If the note of the higher pitch has a frequency 360 hertz ,
diameters and the densities of the two wires are in the ratio 8:1 ,
lengths ,
the number of beats produced per second is: ,
Two uniform wires are vibrating simultaneously in their fundamental modes. The tensions ,
When two sound sources of the same amplitude but of slightly different frequencies v1 and v2 are sounded simultaneously, the sound one hears has a frequency equal to
12
Nov
When two sound sources of the same amplitude but of slightly different frequencies v1 and v2 are sounded simultaneously, the sound one hears has a frequency equal to the sound one hears has a frequency equal to When two sound sources of the same amplitude but of slightly different frequencies v1 and v2 are sounded [...]
When two tuning forks (fork 1 and fork 2) are sounded simultaneously, 4 beats per second are heard. Now some tape is attached on the prong of the fork 2. When the tuning fork are sounded again, 6 beats per second are heard. If the frequency of fork 1 is 200Hz, then what was the original frequency of fork 2 ?
12
Nov
When two tuning forks (fork 1 and fork 2) are sounded simultaneously, 4 beats per second are heard. Now some tape is attached on the prong of the fork 2. When the tuning fork are sounded again, 6 beats per second are heard. If the frequency of fork 1 is 200Hz, then what was the [...]
Tags:
4 beats per second are heard. Now some tape is attached on the prong of the fork 2. When the tuning fork are sounded again ,
6 beats per second are heard. If the frequency of fork 1 is 200Hz ,
then what was the original frequency of fork 2? ,
When two tuning forks (fork 1 and fork 2) are sounded simultaneously ,
There are 26 tuning forks arranged in the decreasing order of their frequencies. Each tuning fork gives 3 beats with the next. The first one is octave of the last. What is the frequency of 18th tuning fork?
12
Nov
There are 26 tuning forks arranged in the decreasing order of their frequencies. Each tuning fork gives 3 beats with the next. The first one is octave of the last. What is the frequency of 18th tuning fork? a 0.5 m long uniform string is vibrating in its second harmonic and it resonates with the [...]
Tags:
a 0.5 m long uniform string is vibrating in its second harmonic and it resonates with the fundamental frequency of the pipe. If the tension in the wire is 50 N and the speed of sound is 320 ms^−1 ,
A hollow pipe of length 0.8 m is closed at one end. At its open end ,
the mass of the string is ,