Appeared in: 2026 (3 sets)
The ratio of amplitude of electric field to the amplitude of the magnetic field associated with an electromagnetic wave propagating in glass ($n = 1.5$) is :
(A) $3 \times 10^8 \text{ ms}^{-1}$
(B) $2 \times 10^8 \text{ ms}^{-1}$
(C) $3.3 \times 10^{-9} \text{ ms}^{-1}$
(D) $5 \times 10^{-9} \text{ ms}^{-1}$