In an electromagnetic wave the electric field vector and magnetic field vector are given as E = E₀i and B = B₀k respectively. The direction of propagation of electromagnetic wave is along: (a) (k) (b) j (c) (-k) (d) (-j)

Answer: (d). Propagation is along E. i = -j. So the answer is (d) -j.

In an electromagnetic wave the electric field vector and magnetic… | JEE Main 2021 (20 Jul, Shift 2)

Q41JEE Main 2021 · 20 JUL · SHIFT 2Easy

Nature of EM Waves & Wave Equation

In an electromagnetic wave the electric field vector and magnetic field vector are given as $\vec{E} = E_0\hat{i}$ and $\vec{B} = B_0\hat{k}$ respectively. The direction of propagation of electromagnetic wave is along:

Show answer and solution

Answer: (d)

Propagation is along $\vec{E}\times\vec{B}$ .
$\hat{i}\times\hat{k} = -\hat{j}$ .
So the answer is (d) $-\hat{j}$ .

Report a mistake

More questions on Nature of EM Waves & Wave Equation

A plane electromagnetic wave propagating along y-direction can have the following pair of…JEE Main 2021 (18 Mar, Shift 2)
A plane electromagnetic wave of frequency 100 MHz is travelling in vacuum along the…JEE Main 2021 (18 Mar, Shift 1)
A plane electromagnetic wave of frequency 500 MHz is travelling in vacuum along…JEE Main 2021 (16 Mar, Shift 1)
A plane electromagnetic wave with frequency of 30 MHz travels in free space. At…JEE Main 2021 (27 Aug, Shift 2)
A light beam is described by E = 800 sin ω (t - x/c). An electron is allowed to move…JEE Main 2021 (26 Aug, Shift 2)
A linearly polarized electromagnetic wave in vacuum E = 3.1 cos [(1.8)z - (5.4 × 10⁶)t] i…JEE Main 2021 (25 Jul, Shift 1)
The magnetic field vector of an electromagnetic wave is given by B = B₀ (i + j)/(√(2))…JEE Main 2021 (31 Aug, Shift 2)
In a plane electromagnetic wave, the directions of electric field and magnetic field are…JEE Main 2020 (2 Sep, Shift 2)

Nature of EM Waves & Wave Equation question from JEE Main 2021 (20 Jul, Shift 2)

More questions on Nature of EM Waves & Wave Equation