Question

For a light ray undergoing refraction, $\frac{sini}{sinr}=$

• A. $\frac{{\mu }_2}{{\mu }_1}$
• B. $1$, always
• C. $0$, always
• D. none of these

Answer 1

Answer: (A)

$\frac{{\mu }_2}{{\mu }_1}$

According to Snell's law of refraction, ${\mu }_{1}sini={\mu }_{2}sinr$

$\frac{sini}{sinr}=\frac{{\mu }_2}{{\mu }_1}$

Where ${\mu }_1$ and ${\mu }_2$ are refractive index of first and second medium respectively.