In a LCR circuit capacitance is changed from $C$ to $2C$. For the resonant frequency to remain unchanged, the inductance should be changed from $L$ to (1) 4L (2) 2L (3) $L / 2$ (4) $L / 4$
In a LCR circuit capacitance is changed from $C$ to $2C$. For the resonant frequency to remain unchanged, the inductance should be changed from $L$ to\\
(1) 4L\\
(2) 2L\\
(3) $L / 2$\\
(4) $L / 4$