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Question: Answered & Verified by Expert
If a source is transmitting electromagnetic wave of frequency \(8.2 \times 10^6 \mathrm{~Hz}\), then wavelength of the electromagnetic waves transmitted from the source will be
PhysicsElectromagnetic WavesAP EAMCETAP EAMCET 2020 (21 Sep Shift 1)
Options:
  • A \(36.5 \mathrm{~m}\)
  • B \(40.5 \mathrm{~m}\)
  • C \(42.3 \mathrm{~m}\)
  • D \(50.9 \mathrm{~m}\)
Solution:
1914 Upvotes Verified Answer
The correct answer is: \(36.5 \mathrm{~m}\)
Frequency of electromagnetic wave,
\(v=8.2 \times 10^6 \mathrm{~Hz}\)
Wavelength, \(\lambda=\) ?
We know that, velocity of electromagnetic wave is given as
\(\begin{aligned}
c & =\mathrm{v} \lambda \Rightarrow \lambda=\frac{c}{\mathrm{v}} \\
& =\frac{3 \times 10^8}{8.2 \times 10^6}=36.5 \mathrm{~m}
\end{aligned}\)

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