Question

If the velocity of light in vacuum is 3 into 10 to the power 8 ms - 1 and 3 and other medium name is 0.75 into 10 to the power 8 m s - 1 what is the refractive index ofm

Answer 1

$\text{velocity of light in vacuum(c)} = 3 \times {10}^{8} \: m {s}^{ - 1}$

$\text{velocity of light in medium(v)} = 0.75 \times {10}^{8} \: m {s}^{ - 1}$

$\text{Refractive index} = \frac{c}{v}\\ \\ \Rightarrow \mu= \frac{3 \times {10}^{8} }{0.75 \times {10}^{8} } \\ \\ \Rightarrow \mu=4$

$\boxed{ \red{ \textbf{Refractive index=4}}}$

Answer 2

the answer is 4

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