InterviewSolution
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InterviewSolution
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The volume of the hollow portion of a sphere is `3/4` of the external volume of the sphere. If it floats in a liquid of relatived density `3/2`, half of its external volume immersed, the relative density of the material of the solid is :A. 2B. 3C. `2.4`D. `1.8` |
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Answer» Correct Answer - B Let `R` be external radius of sphere and `r` be radius of `c`. Given `4/3 pi r^(3) = 3/4(4/3 pi R^(3)) , r^(3) = 3/4 R^(3)` Further, `4/3 pi (R^(3)-r^(3))rho g = 1/2 xx 4/3 pi R^(3) xx 3/2 rho_(w)xxg` Using (i) `(rho)/(rho_w) = 3`. |
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