Test Academy | Two concentric shells have mass M and m and their radii are R and r respectively, where R > r . What is the gravitational potential at their common centre -GM/R, -Gm/r, -G[(M/R)-(m/r), -G[(M/R) + (m/r)]

Question

Two concentric shells have mass M and m and their radii are R and r respectively, where R > r . What is the gravitational potential at their common centre

Options :

-GM/R
-Gm/r
-G[(M/R)-(m/r)
-G[(M/R) + (m/r)]

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