InterviewSolution
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InterviewSolution
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The magnitude of the gravitational field at distance `r_(1)` and `r_(2)` from the centre of a uniform sphere of radius `R` and mass `M` are `F_(1)` and `F_(2)` respectively. Then:A. `(F_(r))/(F_(2))=(r_(1))/(r_(2))` if `r_(1)ltR` and `r_(2)ltR`B. `(F_(1))/(F_(2))=(r_(2)^(2))/(r_(1)^(2))` if `r_(1)gtR` and `r_(2)gtR`C. `(F_(1))/(F_(2))=(r_(1)^(3))/(r_(2)^(3))` if `r_(1)ltR` and `r_(2)ltR`D. `(F_(1))/(F_(2))=(r_(1)^(2))/(r_(2)^(2))` if `r_(1)ltR` and `r_(2)ltR` |
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Answer» Correct Answer - A::B Gravitational field intensity `F=(GMr)/(R^(3))` Inside the sphere `(F_(1)propr_(1),F_(2)propr_(2))` `(F_(1))/(F_(2))=(r_(1))/(r_(2))` or `r_(1)ltR&r_(2)ltR` Gravitational field intensity `Iprop(1)/(r^(2))` (out side the sphere) `therefore(F_(1))/(F_(2))=(r_(2)^(2))/(r_(1)^(2))` if `r_(1)gtR` and `r_(2)gtR` |
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