Waves Test - 2

The displacement y (in cm) produced by simple harmonic wave is given by y = (10/p) sin(2000pt - px/17). The periodic time and maximum velocity of the particles in the medium will respectively be

Two waves of intensities I and 4I produce interference. Then the intensity at constructive and destructive interference respectively is

The extension in a string obeying Hooke’s law is x. The speed of transverse waves in the stretched string is . If the extension in the string is increased to 1.5 x, the speed of transverse waves in it will be

A string of length 0.4 m and mass 10–2 kg is clamped at its ends. The tension in the string is 1.6 N. When a pulse travels along the string, the shape of the string is found to be the same at time t and t + t is. The value of t is

Two sources of sound of the same frequency produce sound intensities I and 4I at a point P when used individually. if they are used together such that the sounds from them reach P with a phase difference of 2/3, the intensity at P will be

Two identical strings are stretched at tensions T_A and T_B. A tuning fork is used to set them in vibration. A vibrates in its fundamental mode and B in its second harmonic mode.

A whistle emitting a sound of frequency 450 Hz approaches a stationary observer at a speed of 33 m/s. Velocity of sound is 330 m/s. The frequency heard by the observer, in Hz, is