NEET2004PhysicsAlternating CurrentActual
A transmitting station transmits radiowaves of wavelength 360 m . Calculate the inductance of coil required with a condenser of capacity 1.20 F in the resonant circuit to receive them
Options
- A3.07 10⁻⁸ H
- B2.07 10⁻⁸ H
- C4.07 10⁻⁸ H
- D60.7 10⁻⁸ H
Correct answer
A. 3.07 10⁻⁸ H
Step-by-step solution
The frequency of radiowaves (speed c=3 10^8 ~m / s ) transmitted f= c = 3 10^8 360 =8.3 10^5 ~Hz Frequency of series resonant circuit aligned f & = 1 2 L C or L & = 1 (2 f)^2 C aligned aligned & = 1 (2 3.14 8.3 10^5 )^2 1.20 10⁻⁶ & =3.07 10⁻⁸ H aligned