An electromagnetic wave is propagating in a medium with a velocity v

1.	An electromagnetic wave is propagating in a medium with a velocity v = − a \(\hat j\). Magnetic field oscillates in the direction of + X - axis. Then, the direction of oscillating electric field of electromagnetic wave will be(a) along − x - direction(b) along + y - direction(c) along − z - direction(d) along + z - direction
Answer» Answer is : (c) along − z - direction Given, v = - a \(\hat j\) ∴ E x B = v, which satisfies, (- \(\hat k\) E x B \(\hat i\)) = a \(\hat j\)

An electromagnetic wave is propagating in a medium with a velocity v = − a \(\hat j\). Magnetic field oscillates in the direction of + X - axis. Then, the direction of oscillating electric field of electromagnetic wave will be(a) along − x - direction(b) along + y - direction(c) along − z - direction(d) along + z - direction

Answer»

Answer is : (c) along − z - direction

Given, v = - a \(\hat j\)

∴ E x B = v, which satisfies,

(- \(\hat k\) E x B \(\hat i\)) = a \(\hat j\)

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