Statement-1 : For the calculation of gravitational force between any two uniform spherical shells, they can always be replaced by particles of same mass placed at respective centres. Statement-2 : Gra

Question

Statement-1 : For the calculation of gravitational force between any two uniform spherical shells, they can always be replaced by particles of same mass placed at respective centres. Statement-2 : Gravitational field of a uniform spherical shell out side it is same as that of particle of same mass placed at its centre.

TestHub · Accepted Answer

Statement-2 is true: a uniform spherical shell attracts external bodies as if all its mass were at its centre.

Statement-1 is false as a universal claim: the replacement works only when each shell lies wholly outside the other; for overlapping or concentric shells the field inside a shell is zero and the centre-replacement fails.

Hence Statement-1 false, Statement-2 true: option (D).

Question with Solution

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