A series LCR circuit is cnnected across a source of alternating emf of changing frequency and resonates at frequency `f_circ`. Keepinf capacitance constant , if the inductant (L) is increased by `sqrt3` times and resistance is increased (R ) by 1.4 times , the resonant frequency now is

Options

A. `3^(1/4) F_circ`
B. `sqrt3f_circ `
C. `(sqrt3-1)^(1/4) F_circ`
D. `((i)/(3))^(1/4) f_circ `

Answer

B

Explanation

`(((Sx)/(S+x))/(y))= (0.625)/(0.375)`
`(((s(5)/S+5/2))= (0.625)/(0.375)`
` (5s)/(2(s+5)= (0.625)/(0.375)`
s= `10Omega`