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A neutral conductor of radius R has a sp...

A neutral conductor of radius `R` has a spherical cavity of radius `R/4` and its centre lies at `R/2` from centre of conductor. A charge `Q` is kept at the centre of cavity.

A

Electric field due to charges induced on inner surface of cavity at centre of conductor is `Q/(2pi epsilon_(0)R^(2))`

B

Net field at a radial distance of `2R` from centre of sphere is `Q/(8pi epsilon_(0)R^(2))`

C

Net force on the surface charges of conductor due to all the charges of cavity is zero.

D

Net force on the charges induced on the surface of cavity is zero.

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