At the air-water boundary, sound passes from air to water ie. from low velocity to high velocity. ie. The reflected wave that later constitutes stationary wave is in the same phase forming constructive interference. WHY is there NODE formation at the boundary?
(Don't tell me air can't vibrate on the boundary so the node is formed, explain on the basis of reflectance coefficient)
7 years ago
by
Rupesh Koirala