Answer Posted / rajasekar
(1) Two stationary waves equal frequency and amplitude meet
in opposite directions
(2) Two stationary waves of equal frequency and amplitude
meet in the same direction
(3) Two stationary waves of equal frequency but different
amplitudes meet in opposite directions
(4) Two stationary waves of equal amplitude but different
frequency meet in opposite directions
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f(f(x))=81 THEN VALUE OF X=
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