Question

In a thin spherical bowl of radius 10 cm filled with water of refractive index $\frac{4}{3}$ there is a small fish at a distance of 4 cm from the centre C as shown in figure. Where will the image of fish appears, if seen from E

• A. 5.2 cm
• B. 7.2 cm
• C. 4.2 cm
• D. 3.2 cm

Answer 1

The correct option is A

5.2 cm

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

where ${\mu }_1=\frac{4}{3},{\mu }_2=1,u=-6cm,v=?$

On putting values v =-5.2 cm i.e. fish will appear to be at 5.2 cm from point E inside the bowl although it is at a distance of 6cm.