A transistor‐oscillator using a resonant circuit with an inductor L (of negligible resistance) and a capacitor C in seriesproduce oscillations of frequency f. If L is doubled and C is changed to 4C,…

Question

A transistor‐oscillator using a resonant circuit with an inductor L (of negligible resistance) and a capacitor C in seriesproduce oscillations of frequency f. If L is doubled and C is changed to 4C, the frequency will be

Accepted Answer

Correct answer: D. (d) Frequency of LC oscillation = 12 LC or, f_1f_2= ( L_2C_2L_1C_1 )^1/2= ( 2L 4CL C )^1/2= (8 )^1/2 ∴ f_1f_2=2 2 ⇒f_2= f_12 2 or, f_2= f2 2 ( ∵f_1=f)

$A transistor‐oscillator using a resonant circuit with an inductor L (of negligible resistance) and a capacitor C in seriesproduce oscillations of frequency f . If L is doubled and C is changed to 4 C, the frequency will be$

Solution

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