Advertisements
Advertisements
प्रश्न
Let E = E0 sin[106 x -ωt] be the electric field of plane electromagnetic wave, the value of ω is ______.
विकल्प
0.3 x 10-14 rad s-1
3 x 10-14 rad s-1
0.3 x 1014 rad s-1
3 x 1014 rad s-1
उत्तर
Let E = E0 sin[106 x -ωt] be the electric field of plane electromagnetic wave, the value of ω is 3 x 1014 rad s-1.
APPEARS IN
संबंधित प्रश्न
The amplitude of the magnetic field part of a harmonic electromagnetic wave in vacuum is B0 = 510 nT. What is the amplitude of the electric field part of the wave?
A laser beam has intensity 2.5 × 1014 W m−2. Find amplitudes of electric and magnetic fields in the beam.
Which of the following is false for electromagnetic waves.
If the magnetic monopole exists, then which of the Maxwell’s equation to be modified?
What are electromagnetic waves?
For which frequency of light, the eye is most sensitive?
A plane EM wave travelling along z direction is described by `E = E_0 sin (kz - ωt)hati` and `B = B_0 sin (kz - ωt)hatj`. show that
- The average energy density of the wave is given by `u_(av) = 1/4 ε_0E_0^2 + 1/4 B_0^2/mu_0`.
- The time averaged intensity of the wave is given by `I_(av) = 1/2 cε_0 E_0^2`.
A plane electromagnetic wave of frequency 500 MHz is travelling in a vacuum along a y-direction.
At a particular point in space and time, `vec"B"` = 8.0 × 10-8 `hat"Z"`T. The value of the electric field at this point is ______.
(speed of light = 3 × 108 ms-1)
`hat x, hat y, hat z` are unit vectors along x, y, and Z directions.
An electromagnetic wave of frequency v = 3.0 MHz passes from vacuum into a dielectric medium with permittivity ∈ = 4.0. Then ______.
What is the source of energy of electromagnetic waves?