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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 untill water rises by 25 cm on the other side. If the density of oil be 0.8, the oil level will stand higher then the water level by

A

6.25 cm

B

12.50 cm

C

31.25 cm

D

20 cm

Text Solution

Verified by Experts

The correct Answer is:
B

`h_(1)rho_(1)=h_(2)rho_(2)`
`h_(1) xx 0.8(2 xx 25)xx 1`
`h_(1)=(50)/(0.8)=62.5 "cm"`
Level difference
`=h_(1)-h_(2)=62.5-50=12.5` cm
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