AP EAMCET202021 Sep 2020Evening ShiftPhysicsSemiconductorsActual
A tuned circuit of a transistor oscillator unit has an inductance of (5 mH ) and a capacitance of (5 pF ). The natural frequency of the oscillator is
Options
- A(100 kHz )
- B(1 GHz )
- C(10 MHz )
- D(1 MHz )
Correct answer
D. (1 MHz )
Step-by-step solution
For tuned circuit of a transistor oscillator unit, ( aligned & L=5 mH =5 10⁻³ H & C=5 pF =5 10⁻¹² ~F aligned ) ( ) Natural frequency of tuned oscillator, ( aligned f & = 1 2 L C = 1 2 5 10⁻³ 5 10⁻¹² & = 1 2 2.5 10⁻¹⁴ & = 10^7 2 2.5 = 10 9.93 10^6 ~Hz & =1.006 10^6 ~Hz & 1 10^6 ~Hz =1 MHz aligned )