As per the question
μ=2\mu=2μ=2 &ϵ=3\epsilon =3ϵ=3
We know that v=1μμoϵϵo=cμϵv=\frac{1}{\sqrt{\mu\mu_o \epsilon \epsilon_o}}=\frac{c}{\sqrt{\mu \epsilon}}v=μμoϵϵo1=μϵc
where, 1μoϵo=c\frac{1}{\sqrt{\mu_o \epsilon_o}}=cμoϵo1=c
Each terms have its usual meaning,
Now,
⇒v=3×108m/sec6\Rightarrow v=\frac{3\times 10^{8}m/sec}{\sqrt{6}}⇒v=63×108m/sec
⇒v=1.22×108m/sec\Rightarrow v = 1.22 \times 10^{8} m/sec⇒v=1.22×108m/sec
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