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AP EAMCET202125 Aug 2021Evening ShiftPhysicsAlternating CurrentActual

117.An L-C resonant circuit contains a 400 pF capacitor and an inductor of 400 μH. It is coupled to an antenna. Wavelength of radiated electromagnetic wave is

Options

  1. A754 m
  2. B377 m
  3. C377 cm
  4. D796 m

Correct answer

A. 754 m

Step-by-step solution

Given, capacitance, C = 400 pF Inductance, L=400 H Frequency of resonating L C -circuit, f= 1 2 L C Wavelength ( )= Velocity (c) Frequency (f) Wavelength, =c 2 L C where, c is velocity of electromagnetic radiation aligned & =3 10^8 2 3.14 400 10⁻¹² 400 10⁻⁶ & =754 ~m aligned

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