Amplitude of a wave is represented by \[A=\frac{c}{a+b-c}\] Then res – McqOptions

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1.	Amplitude of a wave is represented by \[A=\frac{c}{a+b-c}\] Then resonance will occur when [CPMT 1984]
A.	\[b=-c/2\]
B.	b = 0 and a = ? c
C.	\[b=-a/2\]
D.	None of these
Answer» C. \[b=-a/2\]

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