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NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS
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The angle of contact between glass and water is and it rises in a capillary up to 6 cm when its surface tension is 70 dynes/cm. Another liquid of surface tension 140 dyne/cm angle of contact and relative density 2 will rise in the same capillary by
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Correct option: C
3 cm
Option C (3 cm) is correct because it is calculated by comparing the capillary rise equations for the two liquids, considering the differences in surface tension, angle of contact, and density.
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Assertion A: When you squeeze one end of a tube to get toothpaste out from the other end, Pascal's principle is observed.
Reason R: A change in the pressure applied to an enclosed incompressible fluid is transmitted undiminished to every portion of the fluid and to the walls of its container.
In the light of the above statements, choose the most appropriate answer from the options given below. Hydraulic lifts and hydraulic brakes are based
on As the temperature of a liquid is raised, the coefficient of viscosity A horizontal pipe of cross-sectional diameter 5 cm carries water at velocity of . The pipe is connected to a smaller pipe with a cross-sectional diameter 4 cm. the velocity of water through the smaller pipe is If two soap bubble of different radii are connected by a tube