A plane electromagnetic wave travels through glass of refractive index with an…

PHYSICS · Single correct · CBSE · Physics · Electromagnetic Waves · Electromagnetic Waves

Problem

A plane electromagnetic wave travels through glass of refractive index

n = 1.5

with an electric field amplitude of

6\,\text{V m}^{-1}

. Take

c = 3.0 \times 10^{8}\,\text{m s}^{-1}

. Determine the magnetic field amplitude

B_0

inside the glass. (a)

2.0 \times 10^{-8}\,\text{T}

(b)

4.5 \times 10^{-8}\,\text{T}

(c)

3.0 \times 10^{-8}\,\text{T}

(d)

1.3 \times 10^{-8}\,\text{T}