A tank contains water on top of mercury, as shown in the figure. A cubical block of side 
is in equilibrium inside the tank. The depth of the block inside mercury is 
of the material of block 
of mercury 
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Weight= upthrust from mercury + upthrust from water
Here 
depth inside mercury
Solving, we get
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