MHT CET 2026 Physics question
A series resonant circuit consists of an inductor 'L' and capacitor 'C' which produces resonant frequency 'f' If 'L' is increased by '2L' and 'C' is changed to '9C' the resonant frequency will be
Answer: (D)
Solution
Resonant frequency . When is increased by it becomes , and . Then \dfrac{1}{2π\sqrt{3L· 9C}}\dfrac{1}{2π\sqrt{27LC}}$ =
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