A) \[{{b}^{2}}=4ac\]
B) \[{{b}^{2}}>4ac\]
C) \[{{b}^{2}}=5ac\]
D) \[{{b}^{2}}=7ac\]
Correct Answer: A
Solution :
For resonance amplitude must be maximum which is possible only when the denominator of expression is zero i.e. \[a{{\omega }^{2}}-b\omega +c=0\] \[\Rightarrow \omega =\frac{+b\pm \sqrt{{{b}^{2}}-4ac}}{2a}\] For a single resonant frequency, b2 = 4ac.You need to login to perform this action.
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