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Home » A particular station of All India Radio, New Delhi broadcasts on a frequency of (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is: [speed of light (1) (2) (3) (4)
A particular station of All India Radio, New Delhi broadcasts on a frequency of 1,368 \mathrm{kHz} (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is: [speed of light \left.\mathrm{c}=3.0 \times 10^{8} \mathrm{~ms}^{-1}\right]
(1) 219.3 \mathrm{~m}
(2) 219.2 \mathrm{~m}
(3) 2192 \mathrm{~m}
(4) 21.92 \mathrm{~cm}
Chemistry
A particular station of All India Radio, New Delhi broadcasts on a frequency of 1,368 \mathrm{kHz} (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is: [speed of light \left.\mathrm{c}=3.0 \times 10^{8} \mathrm{~ms}^{-1}\right]
(1) 219.3 \mathrm{~m}
(2) 219.2 \mathrm{~m}
(3) 2192 \mathrm{~m}
(4) 21.92 \mathrm{~cm}

Answer is (1)

Energy of electromagnetic radiation (E) is given by,

=\frac{h c}{\lambda}=h \gamma

\text { So, } \frac{c}{\lambda}=\gamma \quad \Rightarrow \lambda=\frac{c}{\gamma}

\lambda=\frac{3 \times 10^{8}}{1368 \times 10^{3}}=219.3 \mathrm{~m}

i

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