(C) The speed of an electromagnetic wave in air is approximately $c = 3 \times 10^8 \text{ m/s}$.The frequency of the wave is given as $f = 60 \text{

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(C) The speed of an electromagnetic wave in air is approximately $c = 3 \times 10^8 \text{ m/s}$.The frequency of the wave is given as $f = 60 \text{ MHz} = 60 \times 10^6 \text{ Hz}$.The relationship between speed,frequency,and wavelength is given by the formula $\lambda = \frac{c}{f}$.Substituting the values,we get $\lambda = \frac{3 \times 10^8}{60 \times 10^6}$.$\lambda = \frac{300 \times 10^6}{60 \times 10^6} = 5 \text{ m}$.Therefore,the wavelength of the wave is $5 \text{ m}$.

Class 12 Physics Electromagnetic waves Properties of Electromagnetic Waves

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If the frequency of an electromagnetic wave is $60 \text{ MHz}$ and it travels in air along the $z$-direction,then the corresponding electric and magnetic field vectors will be mutually perpendicular to each other. The wavelength of the wave (in $\text{m}$) is:

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A
$2.5$
B
$10$
C
$5$
D
$2$

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If the frequency of an electromagnetic wave is $60 \text{ MHz}$ and it travels in air along the $z$-direction,then the corresponding electric and magnetic field vectors will be mutually perpendicular to each other. The wavelength of the wave (in $\text{m}$) is:

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