There is a small black dot at the centre C of a solid glass

Last updated: 6/27/2023

There is a small black dot at the centre C of a solid glass sphere of refractive index u When seen from outside will appear to be located 1 away from C for all values of u 2 at C for all values of u 3 at C for u 1 5 but away from C for p 1 5 4 at C only for 2 sps1 5 formed at