A conducting sphere of radius `R_(2)` has a spherical cavity of radius `R_(1)` which is non concentric with the sphere. A point charge `q_(1)` is placed at a distance r from the centre of the cavity. For this arrangement, answer the following questions.
Electric potential at the centre of the cavity will be :

A conducting sphere of radius R_(2) has a spherical cavity of radius R_(1) which is non concentric with the sphere. A point charge q_(1) is placed at a distance r from the centre of the cavity. For this arrangement, answer the following questions. Electric field (magnitude only) at the center of the cavity will be :

A conducting sphere of radius R_(2) has a spherical cavity of radius R_(1) which is non concentric with the sphere. A point charge q_(1) is placed at a distance r from the centre of the cavity. For this arrangement, answer the following questions. If q_(1) is shifted to the centre of the cavity, then: (choose the correct alternative)

A conducting sphere of radius R_(2) has a spherical cavity of radius R_(1) which is non concentric with the sphere. A point charge q_(1) is placed at a distance r from the centre of the cavity. For this arrangement, answer the following questions. If q_(1) is shifted to the centre of the cavity, then: (choose the correct alternative)

A sphere of radius 2R and mas M has a spherical cavity of radius R as shown in the figure. Find the value of gravitational field at a point P at a distance of 6R from centre of the sphere.

A sphere of radius 2R and mas M has a spherical cavity of radius R as shown in the figure. Find the value of gravitational field at a point P at a distance of 6R from centre of the sphere.

A solid metal sphere of radius R has a charg +2Q. A hollow spherical shell of radius 3R placed concentric with the frist sphere has net charge -Q. Find the electric field between the sphere at a distance r from the centre of the inner sphere. [R lt r lt 3R] .

A solid sphere of mass M and radius R has a spherical cavity of radius R/2 such that the centre of cavity is at a distance R/2 from the centre of the sphere. A point mass m is placed inside the cavity at a distance R/4 from the centre of sphere. The gravitational force on mass m is

A solid sphere of mass M and radius R has a spherical cavity of radius R/2 such that the centre of cavity is at a distance R/2 from the centre of the sphere. A point mass m is placed inside the cavity at a distanace R/4 from the centre of sphere. The gravitational force on mass m is

A solid sphere of mass M and radius R has a spherical cavity of radius R/2 such that the centre of cavity is at a distance R/2 from the centre of the sphere. A point mass m is placed inside the cavity at a distanace R/4 from the centre of sphere. The gravitational force on mass m is