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  • A Sound Source detector and a movable wall are arranged as shown in figure. In this arrangement detector is detecting the maximum intensity. If the speed of sound is 340 m/s in air and frequ

A Sound Source detector and a movable wall are arranged as
shown in figure. In this arrangement detector is detecting the maximum intensity. If the speed of sound is 340 m/s in air and frequency of source is 800 Hz. then find the minimum distance by which the wall should be moved away from source, so that detector detects minimum intensity


 

Option: 1

0.107 m


Option: 2

0.109 m


Option: 3

0.106 m


Option: 4

0.104 m


Answers (1)

best_answer

2 x=\frac{\lambda}{2} \\

x=\frac{\lambda}{4} \\

x=\frac{V}{f \times 4} \\

x=\frac{340}{800 \times 4} \\

x=\frac{17}{40 \times 4}=\frac{17}{160} \\

x=0.106 \mathrm{~m}

Posted by

avinash.dongre

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