Solve the previous problem if the paperweight is inverted at its place so that the spherical surface touches the paper

Answer

A, C

Explanation

Here `, r=oo, u=-cm`
`mu_1=3/2, mu_2=1`
`v=?`
`1/v+3/(2xx3)=(mu_2-mu_1)/alpha` ltbr? `v=-2`
so, shift `=3-2=1cm from paper