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AIR services on vividh Bharti is transmitted on 219m band.What is its transmission frequency in Hertz.

$(a)\;2.3\times10^6Hz\qquad(b)\;1.37\times10^6Hz\qquad(c)\;1.37\times10^2Hz\qquad(d)\;2.3\times10^2Hz$

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$\lambda$ = 219nm
$V = \large\frac{C}{\lambda}$
$V= \large\frac{3.0\times10^8}{219}$
$=1.37\times10^6$ Hz
Hence answer is (b)
answered Feb 4, 2014 by sharmaaparna1
 

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