Question

Find the distance of object placed in the slab of refractive index $\mu$ from point P of the curved surface of radius R so that image is formed at infinity

• A. $\frac{(\mu -1)R}{\mu }$
• B. $\frac{\mu R}{(\mu -1)}$
• C. $\frac{R}{(\mu -1)}$
• D. $\frac{(\mu -1)R}{2\mu }$

Answer 1

The correct option is B $\frac{\mu R}{(\mu -1)}$

$\frac{{\mu }_2}{v}-\frac{{\mu }_1}{u}=\frac{{\mu }_2-{\mu }_1}{R}$

$\frac{1}{infinity}-\frac{\mu }{u}=\frac{1-\mu }{-R}$

$u=-\frac{\mu R}{\mu -1}$

option $B$ is correct