JEE Mains · Physics · STD 12 - 8. Electromagnetic waves
An electromagnetic wave of frequency \(5\, GHz ,\) is travelling in a medium whose relative electric permittivity and relative magnetic permeability both are \(2 .\) Its velocity in this medium is \(\times 10^{7}\, m / s\)
- A \(12\)
- B \(18\)
- C \(15\)
- D \(20\)
Answer & Solution
Correct Answer
(C) \(15\)
Step-by-step Solution
Detailed explanation
Given : Frequency of wave \(f =5 GHz\) \(=5 \times 10^{9} Hz\) Relative permittivity, \(\epsilon_{ r }=2\) and Relative permeability, \(\mu_{ r }=2\) Since speed of light in a medium is given by,…
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