Question

An air bubble in sphere having $4cm$ diameter appears $1cm$ from surface nearest to eye when looked along diameter. If ${}^a{\mu }_g=1.5$ , the distance of bubble from refracting surface is

• A. $1.2cm$
• B. $3.2cm$
• C. $2.8cm$
• D. $1.6cm$

Answer 1

The correct option is A $1.2cm$

The ratio of refractive index is used to solve the problem.

Tge refractive index from aur to glass is 1.5

The distance hence is 1.2 cm