Waves Test - 27...

Beats are produced by frequencies v₁ and v₂(v₁ > v₂). The duration of time between two successive maximum or minimum is equal to

An open organ pipe resonated with frequency f₁ and 2nd harmonic. Now, one end is closed and the frequency is slowly increased, then it resonates with frequency f₂ and nth harmonic, then

Sound waves are passing through two routes-one in straight path and the other along a semicircular path of radius r and are again combined into one pipe and superimposed as shown in the figure. If the velocity of sound waves in the pipe is v, then frequencies of resultant waves of maximum amplitude will be integral multiples of

Fundamental frequency of a sonometer wire is n. If the length and diameter of the wire are doubled keeping the tension same, then the new fundamental frequency is

A uniform wire of length L, diameter D and density p is stretched under a tension T. The correct relation between its fundamental frequency f, the length Land the diameter D is

A long cylindrical tube carries a highly polished piston and has a side opening. A tuning fork of frequency v is sounded at the sound heard by the listener changes if the piston is moved in or out. At a particular position of the piston is moved through a distance of 9 cm, the intensity of sound becomes minimum, if the speed of sound is 360 m/s, the value of v is

A car is moving along x-axis with a velocity v = 20 m/s. It sounds a whistle of frequency 660 Hz. If the speed of sound is 340 m/s, the apparent frequency heard by the observer O (shown in the figure) is

An observer A sees an asteroid with a radioactive element moving by at a speed = 0.3 c and measure the radioactivity decay time to be T_A. Another observer B is moving with the asteroid and measures its decay time as T_B. Then T_A and T_Bare related as

Each of the properties of sound in List I primarily depends on one of the quantities in List II. Select the correct answer (matching List I with List II) as per code given below the