The velocity of electromagnetic waves in free space

1.	The velocity of electromagnetic waves in free space
A.	Increases with increase of frequency
B.	Decreases with increase of frequency
C.	Is independent of frequency
D.	May increase or decrease with increase of frequency
Answer» D. May increase or decrease with increase of frequency

Discussion

No Comment Found

Related MCQs

Consider two fields E = 120 cos (106 t x) ay V/m and H = A cos (106 t x) az A/m The values of A and which will satisfy the Maxwell's equation in a linear isotropic homogeneous lossless medium with r = 8 and r = 2 will be <table width="400px" border="0"><tr><td>A (in A/m)</td><td> (in rad/m)</td></tr><tr><td>A. 1</td><td>0.0105</td></tr><tr><td>B. 1</td><td>0.042</td></tr><tr><td>C. 2</td><td>0.0105</td></tr><tr><td>D. 2</td><td>0.042</td></tr></table>
A plane wave is characterised by this wave is <table><tr><td> </td><td></td><td>^</td><td>^</td></tr> <tr><td> E = </td><td>(0.5</td> <td>x +</td><td>x</td><td>Ej /2)</td><td>ej t jk2</td></tr></table>
The phase velocity for the TE10 mode in an air filled rectangular waveguide is
A material has conductivity of 10 2 mho/m and a relative permittivity of 4 the frequency at which conduction current in the medium is equal to the displacement current is
The dominant mode in a rectangular waveguide is TE10 because this mode has
8-point charges of 1 nc each are located at the corners of a cube in free space that is 1 m on a side, then E at the centre is
If a plane electromagnetic wave satisfies the equation <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center> 2Ex</center></td><td rowspan="2"> = e2</td> <td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center> 2Ex</center></td></tr><tr><td style="text-align: center;"> z2</td><td style="text-align: center;"> t2</td></tr></table> the wave propagates in
A stub having load impedance ZL and stub length / 2 then input impedance Zin is
A uniform plane wave travelling in air is incident on the plane boundary between air and another dielectric medium with r = 4. The reflection co-efficient for the normal incidence is
A uniform place wave in air impinges at 45 angle on a lossless dielectric material with dielectric constant r. The transmitted wave propagate in a 30 direction with respect to the normal the wave of r is

The velocity of electromagnetic waves in free space

Discussion

No Comment Found

Related MCQs

Reply to Comment