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question_answer1) A sound wave has a wavelength of 3.0m. find the distance (in m) from a compression center to the adjacent rarefaction center.
question_answer2) A point source of sound is located somewhere along the x-axis. Experiments show that the same wave front simultaneously reaches listeners at \[x=-8m\] and \[x=+2.0m\]. A third listener is positioned along the positive y-axis. What is her y-coordinate (in m) if the same wave front reached her at the same instant as it does the first two listeners?
question_answer3) A person standing between two parallel hills fires a gun. He hears the first echo after 1.5 s and second after 2.5 s. If the speed of sound is 332 m/s calculate the distance (in m) between the hills.
question_answer4) Three coherent waves of equal frequencies having amplitude\[10\mu m,\,\,4\mu m\] and\[7\mu m\] respectively, arrive at a given point with successive phase difference of\[{\pi }/{2}\;\]. Find the amplitude of the resulting wave in mm.
question_answer5) \[{{S}_{1}},{{S}_{2}}\]are two coherent sources of sound located along x-axis separated by\[4\lambda \] where \[\lambda \] is wavelength of sound emitted by them. Find the Number of maxima located on the elliptical boundary around.
question_answer6) On sounding two tuning forks A and B together 5 beats per second are produced. On filling A slightly, the number of beats per second becomes 2. If the frequency of the A is 384 Hz. Then the frequency of B will be (in Hz)?
question_answer7) A tuning fork when sounded with tuning fork of frequency 256 produces 4 beats/sec and when sounded with another of frequency 250 produces 2beats/sec. Find the frequency (in Hz) of the fork.
question_answer8) When a unknown fork is sounded with a known fork of frequency 288Hz then 5 beats per second are produced. The unknown fork is again sounded after loading it with wax and again 5 beats are produced. Find the frequency (in Hz) of unknown fork.
question_answer9) A metal wire of diameter 1 mm is stretched with a tension of 100N between two bridges 50cm apart. It vibrates with its fundamental frequency to produce 5 beats with a tuning fork. The same number of beats/s are heard when tension is reduced to 81 N. Find the frequency (in Hz) of the fork.
question_answer10) Taking the composition of air to be 75% of \[{{N}_{2}}\]and 25% of oxygen by weight, what is the velocity (in m/s) of sound through air at\[16{}^\circ C.\]
question_answer11) For a certain organ pipe, three successive resonance frequencies are observed at 425 Hz, 595 Hz and 765 Hz respectively. If the speed of sound in air is 340 m/s, then the length (in m) of the pipe is?
question_answer12) The intensity level of sound wave is said to be 4 decibel. If the intensity of wave is doubled, then find the intensity level of sound as expressed in decibel.
question_answer13) Two uniform wires are vibrating simultaneously in their fundamental notes. The tensions, lengths, diameters, and the densities of the two wires are in the ratios 8: 1, 36: 35, 4: 1 and 1: 2 respectively. If the note of the higher pitch has a frequency 360 Hz, find the number of beats produced per seconds.
question_answer14) In the experiment for the determination of the speed of sound in air using the resonance column method, the length of the air column that resonates in the fundamental mode, with a turning fork is 0.1 m. When this length is changed to 0.35m, the same tuning fork resonates with the first overtone. Find the end correction (in m).
question_answer15) In a resonance-column experiment, a long tube, open at the top, is clamped vertically. By a separate device, water level inside the tube can be moved up or down. The section of the tube from the open end to the water level act as a closed organ pipe. A vibrating tuning fork is held above the open end, first and the second resonances occur when the water level is 24.1 cm and 74.1 cm respectively below the open end. Find the diameter of the tube in cm.
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