MCQ
The velocity of electromagnetic wave is parallel to
  • A
    $B+E$
  • B
    $E$
  • $E \times B$
  • D
    $B$

Answer

Correct option: C.
$E \times B$
C

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A nucleus at rest splits into two nuclear parts having same density and the radii in the ratio $1 : 2$ . Their velocities are in ratio ———
Two radiations of photons energies $1 \;eV$ and $2.5\; eV$ , successively illuminate a photosensitive metallic surface of work function $0.5\; eV$. The ratio of the maximum speeds of the emitted electrons is
An alternating voltage is represented as $E = 20\,sin \,300t.$ The average value of voltage over one cycle will be.......$V$
If a force $10 \widehat i +15 \widehat j + 25 \widehat k$ acts on a system and gives an  acceleration $2 \widehat i + 3 \widehat j - 5 \widehat k$ to the centre of mass of the  system, the mass of the system is
A monochromatic light is incident from air on a refracting surface of a prism of angle $75^{\circ}$ and refractive index $n_0=\sqrt{3}$. The other refracting surface of a prism is coated by a thin film of material of refractive index $n$ as shown in figure. The light suffers total internal reflection at the coated prism surface for an incidence angle of $\theta \leq 60^{\circ}$. The value of $n ^2$ is. . . . . 
Two long parallel wires are at a distance of $1$ metre. Both of them carry one ampere of current. The force of attraction per unit length between the two wires is
Two identical cells each of emf $1.5 \,V$ are connected in parallel across a parallel combination voltmeter connected in the circuit measures $1.2 \,V$.

The internal resistance of each cell is.................$\Omega$

When the current flowing in a circular coil is doubled and the number of turns of the coil in it is halved, the magnetic field at its centre will become
A player with $3$ m long iron rod runs towards east with a speed of $30$ km/hr. Horizontal component of earth's magnetic field is $4 \times {10^{ - 5}}Wb/{m^2}$. If he is running with rod in horizontal and vertical positions, then the potential difference induced between the two ends of the rod in two cases will be
Einstein's photoelectric equation states that ${E_k} = h\nu - \phi $. In this equation ${E_k}$ refers to