We have to find the inductance required with a 17-pF capacitor in order to construct an oscillator capable of generating 550-nm (i.e. visible) electromagnetic waves. We have to comment on our answer.
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Solution: Click For PDF Version
In an
LC-oscillator frequency,
Also,
frequency,
We therefore have the relation
The
oscillator is to generate waves of wavelength
It is an extremely small inductance. Therefore, generation of visible radiation as an output of an LC-oscillator is impractical.
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,
generated is determined by the inductance, L,
and the capacitance, C,
by the relation
,
are related to each other by the speed of light, c,
as
with a capacitor of capacitance,
;
therefore, the inductance required will be