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Question

A U-tube having identical limbs is partially, filled with water. An immiscible oil having density 0.8 g/cc is poured into one side until water rises by 25 cm on the other side. Find the difference in the levels of the free surfaces of the liquids

A
125 cm
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B
75 cm
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C
22.5 cm
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D
12.5cm
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Solution

The correct option is C 12.5cm
it raise in height of water =25

then diff b/w heights of water =50

Since pressure of liq.s water

is same.

ρwg(50)=ρ0g×h

1×50=0.8×17

h=62.5 cm

SoΔh=62.550

=12.5 cm

Answer:-(D)

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