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A U-tube is partially filled with water....

A U-tube is partially filled with water. Oil which does not mix with water is next poured into one side, until water rises by 25 cm on the other side. If the density of the oil is 0.8 g/cc, the oil level will stand higher than the water level by :

A

6.25 cm

B

18 · 75 cm

C

12 · 50 cm

D

25 · 00 cm

Text Solution

Verified by Experts

The correct Answer is:
C
Let h be the height of oil level above the water in other tube.
Here pressure due to (h + 50) cm of oil = pressure due to 50 cm of water.
`(h+50)xx0.8xxg=50xx1xxg`
`rArrh=12.5` cm of Hg.
Thus correct choice is (c).
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