Electromagnetic wave consists of periodically oscillating electric and magnetic vectors
Electromagnetic wave consists of periodically oscillating electric and magnetic vectors
- A
in mutually perpendicular planes but vibrating with a phase difference of $\pi $
- B
in mutually perpendicular planes but vibrating with a phase difference of $\frac {\pi }{2}$
- C
in randomly oriented planes but vibrating in phase
- D
in mutually perpendicular planes but vibrating in phase
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The speed of electromagnetic wave in a medium (whose dielectric constant is $2.25$ and relative permeability is $4$ ) is equal to .......... $\times 10^8 \,m / s$
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The electric field of a plane polarized electromagnetic wave in free space at time $t = 0$ is given by an expression
$\vec E(x,y) = 10\hat j\, cos[(6x + 8z)]$
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The electric field of a plane polarized electromagnetic wave in free space at time $t = 0$ is given by an expression
$\vec E(x,y) = 10\hat j\, cos[(6x + 8z)]$
The magnetic field $\vec B (x,z, t)$ is given by : ($c$ is the velocity of light)
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