If the velocity of sound in air is 340 m/s and x is the minimum distance between sound source and reflectingsurface to pet echo from general sound, then |
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(a) |
(b) |
(c) |
(d) |
If the velocity of sound in air is 340 m/s and x is the minimum distance between sound source and reflectingsurface to pet echo from general sound, then |
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(a) |
(b) |
(c) |
(d) |