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MHT CET 2022 Physics question

PhysicsAlternating CurrentMHT CET 2022

In series L-C-R circuit, the capacitance is changed from 'C' to '2C'. To obtain the same resonance frequency the inductance should be changed from 'L' to

Answer: (C)

Solution

The resonance frequency of a series LCR circuit is . To keep the same the product must remain constant: , so , option (C). Doubling

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Question ID VK-095881