A) zero
B) 376.6\[{{y}_{1}}=a\sin \frac{2\pi }{\lambda }(vt-x)\]
C) 1883\[{{y}_{2}}=b\sin \frac{2\pi }{\lambda }[(vt-x)+{{x}_{0}}]\]
D) 3776\[{{x}_{0}}=(\lambda /2)\]
Correct Answer: B
Solution :
In the case of a dielectric (where conductivity is zero) wave impedance of free space \[\frac{v}{c}\] In free space \[\frac{v}{2c}\] and \[\varepsilon =8.54\times {{10}^{-12}}F/m.\] So, the value of wave impedance in free space, \[{{Z}_{0}}\approx 377\Omega \]
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