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Two concentric shells of masses `M_(1)` and `M_(2)` are having radii `r_(1)` and `r_(2)`. Which of the following is the correct expression for the gravitational field on a mass `m`? A. `F=(G(M_(1)+M_(2)))/(r_(2)),"for"ltr_(1)`B. `E=(G(M_(1)+M_(2)))/(r_(2)),"for"ltr_(2)`C. `E=(GM_(2))/(r_(2)),"for"r_(1)ltrltr_(2)`D. `E=(GM_(1))/(r_(2)),"for"r_(1)ltrltr_(2)` |
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Answer» Correct Answer - C field at internal point of the shell is zero but at externam point shell behave as if its whole mass at centre. |
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