A) 1.5
B) 2.0
C) 2.4
D) 4.0
Correct Answer: B
Solution :
[b] Comparing the given equation with equation of plane electromagnetic wave, \[{{E}_{z}}={{E}_{0}}\cos (\omega t+kx)\], we have \[\omega =6\times {{10}^{-8}}\]and \[k=4.\] Velocity of light in medium \[v=\frac{\omega }{k}=\frac{6\times {{10}^{8}}}{4}=\frac{3}{2}\times {{10}^{8}}m/s\] Refractive index, \[\mu =\frac{c}{v}=\frac{3\times {{10}^{8}}}{(3/2)\times {{10}^{8}}}=2\]You need to login to perform this action.
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