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Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class12  >>  Electromagnetic Waves
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The wavelength of a radio wave of frequency of $1\: MHz$ is:

$\begin {array} {1 1} (a)\;400\: m & \quad (b)\;300\: m \\ (c)\;350\: m & \quad (d)\;200\: m \end {array}$

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$\lambda = \large\frac{c}{frequency}$$ = \large\frac{3 \times 10^8ms^{-1}}{ 10^6Hz}$$ = 300\: m$$
Ans : (b)
answered Feb 27, 2014 by thanvigandhi_1
 

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