Sound Waves Questions

A wave travelling in the +ve x-direction having displacement along y-direction as 1m, wavelength 2π m and frequency of Hz is represented by :...

A source of unknown frequency gives 4 beats/s, when sounded with a source of known frequency 250 Hz, The second harmonic of the source of unknown frequency gives five beats per second, when sounded wi...

If we study the vibration of a pipe open at both ends, then the following statement is not true :

The fundamental frequency of a closed organ pipe of length 20 cm is equal to the second overtone of an organ pipe open at both the ends. The length of organ pipe open at both the ends is :-...

20. Tow cars moving in opposite directions approach each other with speed of 22 m/s and 16.5 m/s respectively. The driver of the first car blows a horn having a a frequency 400 Hz. The frequency heard...

A siren emitting a sound of frequency 800 Hz moves away from an observer towards a cliff at a speed of15 ms-1. Then, the frequency of sound that the observer hears in the echo reflected from the cliff...

An air column, closed at one end and open at the other, resonates with a tuning fork when the smallestlength of the column is 50 cm. The next larger length of the column resonating with the same tunin...

A granite rod of 60 cm length is clamped at its middle point and is set into longitudinal vibrations. The density of granite is 2.7 ×103 kg/m3 and its Young's modulus is 9.27×1010 Pa. What will be ...

A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of 27oC two successiv resonances are pro...

The fundamental frequency in an open organ pipe is equal to the third harmonic of a closed organ pipe. If the length of the closed organ pipe is 20 cm, the length of the open organ pipe is :-

The number of possible natural oscillations of air column in a pipe closed at one end of length 85 cm whose frequencies lie below 1250 Hz are (velocity of sound = 340 ms-1)...

In an experment to measure the speed of sound by a resonating air column, a tuning fork of frequency 500 Hzis used. The length of the air column is varied by changing the level of water in the resonan...

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 below1250 Hz. The velocity of sound in air is 340 m/s....

A speeding motorcyclist sees traffic jam ahead of him. He slows down to 36 km/hour. He finds that traffic has eased and a car moving ahead of him at 18 km/hour is honking at a frequency of 1392 Hz. If...

Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other. Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f...

A student is performing an experiment using a resonance column and a tuning fork of frequency 244 s-1. He is told that the air in the tube has been replaced by another gas (assume that the column rema...

cylinder tube, opern at both ends, has a fundamental frequency f in air. The tube is dipped vertically in water so that half of its length in water. The fundamental frequency of the air column is now...

A transerve wave is described by the equation y = y0 sin 2π(ft - ). The maximum particle velocity is equal to four times the wave velocity if...

A tube, closed at one end and containing air, produces, when excited, the fundamental note of frequency 512 Hz. If the tube is opened at both ends the fundamental frequncy that can be excited is (in H...

An organ pipe P1 is closed at one end vibrating in its third first harmonic and another P2 open at both ends vibrating in its third harmonic are in resonance with a given tuning fork. The ratio of the...