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  4. To which region of electromagnetic spectrum, the frequency 1 GHz corresponding?

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Q. To which region of electromagnetic spectrum, the frequency $1\, GHz$ corresponding?

Uttarkhand PMTUttarkhand PMT 2007

Solution:

$n=1 GHz =10^{9} Hz$
$\therefore \lambda=\frac{c}{n}=\frac{3 \times 10^{8}}{10^{9}}=\frac{3}{10}$
$\Rightarrow \lambda=0.3 \,m =30\, cm$ (radiowaves)