Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
Concepts Of Physics MCQ Edition [Volume 2]PhysicsElectromagnetic Waves

A certain region contains an electric field E and a magnetic field B that are not mutually perpendicular.

Options

  1. AAn electromagnetic wave is definitely travelling through this region.
  2. BThis situation is impossible.
  3. CAn electromagnetic wave might be travelling through this region.
  4. DNo electromagnetic wave is travelling through this region.

Correct answer

C. An electromagnetic wave might be travelling through this region.

Step-by-step solution

In an electromagnetic wave, the oscillating electric and magnetic fields are always mutually perpendicular. However, a region can contain static electric and magnetic fields that are not mutually perpendicular. By the principle of superposition, an electromagnetic wave can propagate through such a region. The net electric and magnetic fields in this region will be the vector sum of the static fields and the time-varying fields of the electromagnetic wave. As a result, the net fields may not be mutually perpendicula

Practice Electromagnetic Waves on Quantrex Academy →

More from Electromagnetic Waves

The electric field associated with an electromagnetic wave travelling in vacuum is given by E₀ (3y + 4z + t) , i , where is the angular frequency. All quantities are in SI units. T 2026A monochromatic source of light operating at 15 kW emits 2.5 10²² photons/s. The region of an electromagnetic spectrum to which the emitted electromagnetic radiation belongs to ___ 2026For an electromagnetic wave propagating through vacuum, k , E and represent propagation vector, electric field and angular frequency, respectively. The magnetic field associated wi 2026A point light source emits E.M. waves in free space. A detector, placed at a distance of L m, measures the intensity as I_o . The detector is now shifted to another location on the 2026A displacement current of 4.0 A can be set up in the space between two parallel plates of 6 F capacitor. The rate of change of potential difference across the plates of the capacit 2026A magnetic field vector in an electromagnetic wave is represented by B =B₀ (2 vt- 2 x ) j . Its associated electric field vector is ______. 2026An electromagnetic wave travels in free space along the x -direction. At a particular point in space and time, B = 2 10⁻⁷ j T is associated with this wave. The value of correspondi 2026An electromagnetic wave travelling in x -direction is described by field equation E_y = 300 (t - x c ) . If the electron is restricted to move in y -direction only with speed of 1. 2026 Full Electromagnetic Waves list All Concepts Of Physics MCQ Edition [Volume 2] PYQs