PhysicsThe property of electromagnetic waves is:


The property of electromagnetic waves is:


  1. A
    Electromagnetic waves are transverse in nature
  2. B
    They propagate by varying electric fields and magnetic fields
  3. C
    Both 1 and 2
  4. D
    None of these 

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    Solution:

    Concept- We begin by defining electromagnetic waves in this question as the waves produced by an oscillating or shifting magnetic and electric field. We examine each characteristic one at a time, such as the fact that the electric and magnetic fields are transverse in nature, the ability of electromagnetic waves to travel through vacuum, as opposed to mechanical waves, and the fact that the speed of light for electromagnetic waves is given by [Math Processing Error]. Pointing vector P describes the energy transmitted by electromagnetic waves.
    These two fields are related because when an electric field changes, it induces a magnetic field, and when a magnetic field changes, it induces an electric field.
    James Clerk Maxwell and Heinrich Hertz developed the idea of an electromagnetic wave, or EM wave, based on this idea.
    Since they are perpendicular to both each other and the direction of transmission, electromagnetic waves are thus described as waves created by an oscillating or fluctuating magnetic and electric field.
    Maxwell's equations' solutions yield the equation for electromagnetic waves.
    1. To create electromagnetic waves, the electric and magnetic fields must be changed such that they are perpendicular to one another and to the direction of propagation. Consequently, transverse waves is the name given to electromagnetic waves.
    2. The electromagnetic wave can travel in a vacuum; it is not dependent on a material medium.
    3. For EM waves, the oscillating magnetic and electric fields have the same phase and magnitude. We can calculate the velocity of light by dividing the amplitudes of the magnetic and electric fields by each other.
    5. The superposition principle is always followed by electromagnetic waves.
    6. Electromagnetic waves' wavelength varies as they travel through different media, but their frequency is unaltered.
    8. The energy of electromagnetic waves' electric and magnetic fields are equal.
    9.Electromagnetic waves are transverse in nature.They propagate by varying electric fields and magnetic fields.
    Hence, the correct answer is option 3,
     
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