An LC circuit contains inductance L=1μH and capacitance C=0.01μF. The wavelength of electromagnetic wave generated is nearly
A
0.5 m
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B
5 m
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C
190 m
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D
30 m
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Solution
The correct option is C190 m For resonant frequency, we can write ω=1√LC=1√10−6×10−8=107 f=ω2π f=1072π
Velocity of the wave ∴v=fλ⇒λ=vf λ=3×108107×2π=60π=188.57≈190 m
Hence, option (C) is correct.