Amplitude of a wave is represented by $A = \frac{c}{{a + b - c}}$ Then resonance will occur when
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(b) $A = \frac{c}{{a + b - c}};$ when $b = 0$, $a = c$ amplitude
$A \to \infty $. This corresponds to resonance.
$A \to \infty $. This corresponds to resonance.
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