In a hall ,a detector receives sound waves one directly from the source and the other from the reflection from the 25 m high ceiling.The maximum wavelength for which there is minima at position of detector is \lbrack dis†an ce between source and detector is 120 m \rbrack

Open in App

Solution

Suggest Corrections

Similar questions

Q. A person standing at a distance of 6 m from a source receives sound wave in two ways, one directly from the source and other after reflection from a rigid boundary as shown in the figure. The maximum wavelength for which, the person will receive maximum sound intensity, is :

A

source

S

and a detector

D

are placed at a distance d apart. A big cardboard is placed at a distance

\sqrt{2}

d from the source and the detector as shown in figure. The source emits a wave of wavelength =

d / 2

which is received by the detector after reflection from the cardboard. It is found to be in phase with the direct wave received from the source. By what minimum distance should the cardboard be shifted away so that the reflected wave becomes out of phase with the direct wave?

Q. A source emitting sound of frequency 165 Hz is placed in front of a wall at a distance of 2 m from it. A detector is also placed in front of the wall at the same distance from it. Find the distance between the source and the detector for which the detector detects phase difference of 21 t between the direct and reflected wave. Speed of sound in air = 330 m/s :

Q. In a large room, a person receives direct sound waves from a source

120 m

away from him. He also receives the sound waves from the same source, which reaches him after being reflected from the

25 m

high ceiling at a point midway between them. The two waves interfere constructively for wavelengths (in

m

) of -

A source S and a detector D are placed at a distance d apart. A big cardboard is placed at a distance $\sqrt{2} d$ from the source and the detector as shown in figure (16-E2). The source emits a wave of wavelength = $\frac{d}{2}$ which is received by the detector after reflection from the cardboard. It is found to be in phase with the direct wave received from the source. By what minimum distance should the cardboard be shifted away so that the reflected wive becomes out of phase with the direct wave ?

Join BYJU'S Learning Program