NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

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A tank is filled with water of density

1\mathrm{gc}{\mathrm{m}^{ - 3}}

and oil of density

0.9\mathrm{gc}{\mathrm{m}^{ - 3}}

. The height of water layer is 100 cm and of oil layer is 400 cm. If

\mathrm{g} = 980\mathrm{cm }{\mathrm{s}^{ - 2}}

, then the velocity of efflux from an opening in the bottom of the tank is

View answer and explanation

Correct option: B

\sqrt {1000 \times 980} \mathrm{cm}{\mathrm{s}^{ - 1}}

Option B is correct because the velocity of efflux is calculated using Torricelli's theorem, considering the pressure due to both water and oil layers.

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