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A tank contains water on top of mercury ...

A tank contains water on top of mercury as shown in figure. A cubical block of side 10 cm is in equilibrium inside the tank. The depth of the block inside mercury is (RD of the material of block =8.56, RD of mercury =13.6)

A

6 cm

B

5 cm

C

7 cm

D

8 cm

Text Solution

Verified by Experts

The correct Answer is:
A
Weight= upthrust from mercury + upthrust from water
`therefore " " 10xx8.56=(x xx 13.6)+(10-x)xx10`
Here x= depth inside mercury
Solving, we get
x=6 cm
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