One end of a cylindrical glass is given the shape of the concave refracting surface of radius 10cm. An air bubble is situated in the glass rod of a point on its axis such that it appears to be at distance 10cm from the surface and inside glass when seen from the other medium. Find the actual location of air bubble

One end of a cylindrical glass is given the shape of the concave refra

1.	One end of a cylindrical glass is given the shape of the concave refracting surface of radius 10cm. An air bubble is situated in the glass rod of a point on its axis such that it appears to be at distance 10cm from the surface and inside glass when seen from the other medium. Find the actual location of air bubble
Answer» SOLUTION :`mu_2/v-mu_1/v=(mu_2-mu_1)/R` Here `mu_1=1.5, mu_2=1` `v=-10cm, R=+10 cm` `THEREFORE -1/10-1.5/u=(1-1.5)/10=-1/20` `=1.5/u=1/10+1/20=-1/20 therefore u=-30 cm` HENCE the air bubble is actually located at a distance 30 cm from the surface and inside glass.