In a certain series LCR A.C. circuit it is found that XL=2XC and phase difference between the current and voltage is π/4. If now capacitance is made 1/4th & the inductance and resistance are doubled then which option(s)are NOT CORRECT.
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a
Voltage will lead current by a phase of tan−11/2
b
Voltage will lag behind current by a phase of tan−11/2