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MHT CET202015 Oct 2020Morning ShiftPhysicsAlternating CurrentActual

In LCR circuit the inductance is changed from L to 9 ~L . For same resonant frequency the capacitance should be changed from C to

Options

  1. A9 C
  2. B3 C
  3. CC 9
  4. DC 3

Correct answer

C. C 9

Step-by-step solution

= 1 L ₁ C ₁ = 1 L ₂ C ₂ L ₁ C ₁= L ₂ C ₂ C ₂= L ₁ C ₁ ~L ₂ = L 9 ~L C = C 9

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