Two speakers are driven by the same oscillator with frequency of 200 Hz. They are located 4 m part on a vertical pole. A man walks straight towards the lower speaker in a direction perpendicular to the pole, as shown in figure. (i) How many times will he hear a minimum in sound intensity, and (ii) how far is he from the pole and at these moments ? Take the speed of sound to be 330 m/s, and ignore any sound reflections coming off the ground.
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An oscillator of frequency 680 Hz drives two speakers . The speakers are fixed on a vertical pole at a distance 3 m from each other as shown in Fig. 7.103. A person whose height is almost the same as that of the lower speaker walks towards the lower speaker in a direction perpendicular to the pole. Assuming that there is no reflection of sound from the ground and speed of sound is v = 340 m//s , answer the following questions. How far is the person from the pole when he hears a minimum in sound intensity a second time ?

An oscillator of frequency 680 Hz drives two speakers . The speakers are fixed on a vertical pole at a distance 3 m from each other as shown in Fig. 7.103. A person whose height is almost the same as that of the lower speaker walks towards the lower speaker in a direction perpendicular to the pole. Assuming that there is no reflection of sound from the ground and speed of sound is v = 340 m//s , answer the following questions. How far is the person from the pole when he hears a minimum in sound intensity a second time ?

An oscillator of frequency 680 Hz drives two speakers . The speakers are fixed on a vertical pole at a distance 3 m from each other as shown in Fig. 7.103. A person whose height is almost the same as that of the lower speaker walks towards the lower speaker in a direction perpendicular to the pole. Assuming that there is no reflection of sound from the ground and speed of sound is v = 340 m//s , answer the following questions. As the person walks toward the pole , the total number of times that the person hears a minimum in sound intensity will be

An oscillator of frequency 680 Hz drives two speakers . The speakers are fixed on a vertical pole at a distance 3 m from each other as shown in Fig. 7.103. A person whose height is almost the same as that of the lower speaker walks towards the lower speaker in a direction perpendicular to the pole. Assuming that there is no reflection of sound from the ground and speed of sound is v = 340 m//s , answer the following questions. As the person walks toward the pole , the total number of times that the person hears a minimum in sound intensity will be

An oscillator of frequency 680 Hz drives two speakers . The speakers are fixed on a vertical pole at a distance 3 m from each other as shown in Fig. 7.103. A person whose height is almost the same as that of the lower speaker walks towards the lower speaker in a direction perpendicular to the pole. Assuming that there is no reflection of sound from the ground and speed of sound is v = 340 m//s , answer the following questions. As the person walks towards the pole , his distance from the pole when he first hears a minimum in sound intensity is nearly

An oscillator of frequency 680 Hz drives two speakers . The speakers are fixed on a vertical pole at a distance 3 m from each other as shown in Fig. 7.103. A person whose height is almost the same as that of the lower speaker walks towards the lower speaker in a direction perpendicular to the pole. Assuming that there is no reflection of sound from the ground and speed of sound is v = 340 m//s , answer the following questions. As the person walks towards the pole , his distance from the pole when he first hears a minimum in sound intensity is nearly