1.

A uniformly charged thin spherical shell of radius R carries uniform surface charge density of sigma. It is made of two hemispherical shells, held together by pressing them with force F then F is proportional to

Answer»

`1/(in_0) sigma^2 R^2`
`1/(in_0) sigma^2 R`
`1/(in_0) (sigma^2)/(R)`
`1/(in_0) (sigma^2)/(R^2)`

ANSWER :A


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