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NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS
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Medium
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Analyzing
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Given below are two statements: One is labelled as Assertion (A) and other is labelled as Reason (R).
Assertion (A) : Time period of oscillation of a liquid drop depends on surface tension , if density of the liquid is and radius of the drop is , then is dimensionally correct, where is dimensionless.
Reason (R) : Using dimensional analysis we get R.H.S. having different dimension than that of time period.
In the light of above statements, choose the correct answer from the options given below.
Assertion (A) : Time period of oscillation of a liquid drop depends on surface tension , if density of the liquid is and radius of the drop is , then is dimensionally correct, where is dimensionless.
Reason (R) : Using dimensional analysis we get R.H.S. having different dimension than that of time period.
In the light of above statements, choose the correct answer from the options given below.
View answer and explanation
Correct option: D
(A) is false but (R) is true
Option D is correct. Assertion (A) is dimensionally incorrect, and Reason (R) correctly states that dimensional analysis shows the incorrectness.
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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