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  4. A U tube of uniform inner cross-section contains mercury in both sides of its arms. An ethyl alcohol column of length 12 cm is introduced into one of its arms. Water of length 10 cm is poured into the other arm. Find density of ethanol.

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Q. A $U$ tube of uniform inner cross-section contains mercury in both sides of its arms. An ethyl alcohol column of length $12\, cm$ is introduced into one of its arms. Water of length $10\, cm$ is poured into the other arm. Find density of ethanol.Physics Question Image

JIPMERJIPMER 2018Mechanical Properties of Fluids

Solution:

Solution $\quad P_{0}+\& r h o_{w} g(10)=P_{0}+\rho_{a l} g(12)$ $\rho_{w} 10=\rho_{a l}(12)$ $a_{l}=\frac{1^{1} 0}{12}=0.830 .83 g / cm ^{3}$