Two speakers `S_1 and S_2` , driven by the same amplifier, areplaced at `y = 1.0 m and y = -1.0 m`. The speakers vibrate in phase at 600 Hz. A man stands at a point on the X-axis at a very large distance from the origin and starts moving parallel to the Y-axis. The speed of sound in air is` 330 ms^-1` (a) At what angle `theta` will the intensity of sound drop to a minimum for the first time ? (b) At what angle will he hear a maximum of sound intensity for the first time ? (c) If he continues to walk along the line, how many more maxima can he hear ?

Two speakers S_(1) and S_(2) derived by the same amplifier and placed at y = 1.0 m and y = - 1.0 m (Fig . 7.9) The speakers vibrate in phase at 600 Hz . A man stands at a point on the x - axis at a very large distance from the origin and starts moving parallel to the Y - axis . The speed of sound in air is 330 m//s . (a). At what angle will the intensity of sound drop to a minimum for the first time ? (b) At what angle will the sound intensity be maximum for the first time ? (c ) If he continues to walk along the line , how many more maxima can he hear ?

Two speakers S_(1) and S_(2) derived by the same amplifier and placed at y = 1.0 m and y = - 1.0 m (Fig . 7.9) The speakers vibrate in phase at 600 Hz . A man stands at a point on the x - axis at a very large distance from the origin and starts moving parallel to the Y - axis . The speed of sound in air is 330 m//s . (a). At what angle will the intensity of sound drop to a minimum for the first time ? (b) At what angle will the sound intensity be maximum for the first time ? (c ) If he continues to walk along the line , how many more maxima can he hear ?

Two sound speakers are driver in phase by an audio amplifier at frequency 600 H_(Z) . The speed of sound is 340 m//s . The speakers are on the y - axis, one at y = + 1.0 m and the other at y = - 1.0 m . A listener begins at y = 0 and walks along a line parallel to the y - axis at a very large distance x away. (a) At what angle theta (between the line from the origin to the listener at the x - axis) will she first hear a minimum sound intensity? (b) At what angle will she first hear a maximum (afer theta = o^(@) ) sound intensity? (c ) How many maxima can she possible hear if she keeps walking in the same direction?

Two sound speakers are driver in phase by an audio amplifier at frequency 600 H_(Z) . The speed of sound is 340 m//s . The speakers are on the y - axis, one at y = + 1.0 m and the other at y = - 1.0 m . A listener begins at y = 0 and walks along a line parallel to the y - axis at a very large distance x away. (a) At what angle theta (between the line from the origin to the listener at the x - axis) will she first hear a minimum sound intensity? (b) At what angle will she first hear a maximum (afer theta = o^(@) ) sound intensity? (c ) How many maxima can she possible hear if she keeps walking in the same direction?

A man’stationed between two hills fires a gun. He hears the first echo after 1 s and the second after 2 s. What is the distance between the hills. The speed of sound in air is 330 m/s.

An echo of sound produced by a person, is heard from a distant tower after an interval of 1.5 s. If the speed of sound in air is 330 ms^(-1) , then the distance of the tower from the person is _______ m.

The speed of sound in air is 330 m s^(-1) and in water is 1650 m s^(-1) . It takes 2 s for sound to reach a certain distance from the source placed in air. Find the distance.

If man were standing unsymmetrically between parallel cliffs, claps his hands and starts hearing a series of echoes at intervals of 1 s. If speed of sound in air is 340 ms-1, the distance between two cliffs would be ......