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प्रश्न
What are the directions of electric and magnetic field vectors relative to each other and relative to the direction of propagation of electromagnetic waves?
उत्तर
Since electromagnetic waves are transverse in nature. We have electric and magnetic fields associated with an electromagnetic wave perpendicular to each other and perpendicular to the direction of propagation of electromagnetic waves.
Let the direction of electric field and magnetic field is along Y- and Z- axis then the direction of propagation of EM waves will be in positive X-axis.
संबंधित प्रश्न
Write the following radiations in ascending order with respect to their frequencies:
X-rays, microwaves, UV rays and radio waves.
Can an electromagnetic wave be deflected by an electric field or a magnetic field?
A plane electromagnetic wave is passing through a region. Consider (a) electric field (b) magnetic field (c) electrical energy in a small volume and (d) magnetic energy in a small volume. Construct the pairs of the quantities that oscillate with equal frequencies.
Which of the following have zero average value in a plane electromagnetic wave?
(a) Electric field
(b) Magnetic field
(c) Electric energy
(d) Magnetic energy
A point charge is moving along a straight line with a constant velocity v. Consider a small area A perpendicular to the motion of the charge. Calculate the displacement current through the area when its distance from the charge is x. The value of x is not large, so that the electric field at any instant is essentially given by Coulomb's law.
Which of the following is NOT true for electromagnetic waves?
Explain the Maxwell’s modification of Ampere’s circuital law.
The electric field of a plane electromagnetic wave travelling in +ve z-direction is described by ______.
Magnitude of the electric and the magnetic fields in a plane electromagnetic wave are related by ______.
A 27 mW laser beam has a cross-sectional area of 10 mm2. The magnitude of the maximum electric field in this electromagnetic wave is given by:
[Given permittivity of space ∈0 = 9 × 10-12 SI units, Speed of light c = 3 108 m/s]
