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Q.

A cubical block of iron of side 20 cm is floating in mercury taken in a vessel. What is the depth of the block inside mercury level(ρHg=13.6 g/cm3,ρFe=2.7 g/cm3)

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a

6.5

b

8.5

c

4

d

2

answer is C.

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Detailed Solution

Law of flotationVbρbg=VinρLg203×2.7=202x×13.620 x 2.7 = 13.6 xx=27×213.6=4

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