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Physics · PYQ NEET UG 2019(2)
हिन्दीIn a u-tube as shown in the fig. water and oil are in the left side and right side of the tube respectively. The heights from the bottom for water and oil columns are \( 15\text{ cm} \) and \( 20\text{ cm} \) respectively. The density of the oil is [take \( \rho_{\text{water}} = 1000\text{ kg/m}^3 \)]
Correct answer · Option C
\( 750\text{ kg/m}^3 \)
Explanation
Equating pressure at the lowest horizontal interface: \( h_w \rho_w g = h_o \rho_o g \implies 15 \times 1000 = 20 \times \rho_o \implies \rho_o = 750\text{ kg/m}^3 \).
