an empty spherical flask of diameter 100 cm is placed in water (n=4/3). a parallel beam of light strikes the flask.where will it apper to come from to an observer within the flask

Question

an empty spherical flask of diameter 100 cm is placed in water
(n=4/3) a parallel beam of light strikes the flask where will it
apper to come from to an observer within the flask

Jyoti Pant · Accepted Answer

Given,
Diameter=100 cmSo radius, r=100/2=50 cmRefractive index of water,μ2=4/3Refractive index of air,μ1=1Object distance, u=∞Image distance, v=?Using the relation,μ2-u+μ1v=μ1-μ2R0+1v=1-4350=-1150or v=-150 cm
It will appear to come from a distance of 150 cm