12 a wooden block Two liquids are taken in two beakers named A and B. when of mass QON is placed in beakes A. it floats. When the wooden block is placed in B, it sinks, in beaker B? @ the wooden block sinks 0 @ why the wooden 6 If these two liquids cannot be mixed together is taken in one beake, which liquid will be on the top? why?
Answers
Explanation:
given :
a wooden block Two liquids are taken in two beakers named A and B. when of mass QON is placed in beakes A. it floats. When the wooden block is placed in B, it sinks, in beaker B? @ the wooden block sinks 0 @ why the wooden 6 If these two liquids cannot be mixed together is taken in one beake, which liquid will be on the top? why?
to find :
why the wooden 6 If these two liquids cannot be mixed together is taken in one beake, which liquid will be on the top? why?
solution :
- B is more dense than A
- upthrust applied by A is morethan B surface tension of A is more than B
Explanation:
Float with 40% above the water surface
Under equilibrium, the weight of the block is balanced by the upward buoyant force actin on it, that is,
mg=Vρg
where ρ is the density of the water.
V is the volume of block immersed in water,
⟹V=
ρ
m
which is independent of the value of g.
Hence when placed in lift going upwards with acceleration g/2, and the effective gravitational acceleration becomes g+g/2=
2
3g
, the volume immersed in water remains the same.
Hence the correct answer is option C.
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