A block of area A and density ρ is immersed in a liquid of density 3 ρ . Another liquid of density 2 ρ is filled above 3 ρ . When the block is released then–
Column-I | Column-I |
(i) Work done by buoyancy when block reaches the surface of lower liquid | [A] ρAgH2/2 |
(ii) Work done by buoyancy when block moves from lower liquid into the upper liquid | [B] ρAgH2 |
(iii) Work done by buoyancy when the block moves from lower surface of upper liquid to the upper surface of same liquid | [C] 6ρAgH2 |
(iv) Work done by buoyancy when block comes out from inside upper liquid to the air | [D] 4ρAgH2 |
Text Solution
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Ans.
(i) [A], [D]
(ii) [C], [D]
(iii) [A], [B]
(iv) [B]
Sol.
(i) ρ AgH 2 /2, 4 ρ AgH 2 (ii) 6 ρ AgH
2 , 4 ρ AgH 2
(iii) ρ AgH 2 /2, ρ AgH 2
(iv) ρ AgH 2
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