Two loudspeakers `L_1` and `L_2` driven by a common oscillator and amplifier, are arranged as shown. The frequency of the oscillator is gradually increased from zero and the detector at D records a series of maxima and minima. If the speed of sound is `330ms^-1` then the frequency at which the first maximum is observed is

An inductor L , a capacitor C and AC ammeters A_(1),A_(2) and A_(3) are connected in the circuit as shown. When the frequency of the oscillators is increased, then at resonant frequency, the reading of ammeter ?

An observer is moving away from a sound source of frequency 100 Hz. If the obsever is moving with a velocity 49ms^-1 and the speed of sound in air is 330ms^-1 . The observed frequency is

A sound source capable of producing sound of variable frequencies is located at a distance of 1 m from a reflecting wall as shown in the figure. A detector D is lying at a point shown in the figure. The various distances are also indicated. If the speed of sound in air is 340" "ms^(-1) , find the frequencies of sound within the audible range, which will have maximum intensity at detector?

A sound source capable of producing sound of variable frequencies is located at a distance of 1 m from a reflecting wall as shown in the figure. A detector D is lying at a point shown in the figure. The various distances are also indicated. If the speed of sound in air is 340" "ms^(-1) , find the frequencies of sound within the audible range, which will have maximum intensity at detector?

The frequency of the sound of a car horn as recorded by an observer towards whom the car is moving differs from the frequency of the horn by 10% . Assuming the velocity of sound in air to be 330ms^(-1) , the velocity of the car is

A sound sources, detector and a movable wall are arranged as shown in figure. In this arrangement detectir us detacting the maximum intensity. If the speed of sound is 330 m//s in air and frequency of source is 660 Hz , then find the minimum distance by which the wall should be moved away from source, so that detector dtects minimmum intensity.

A sound sources, detector and a movable wall are arranged as shown in figure. In this arrangement detectir us detacting the maximum intensity. If the speed of sound is 330 m//s in air and frequency of source is 660 Hz , then find the minimum distance by which the wall should be moved away from source, so that detector dtects minimmum intensity.