Viscosity Test-9 (Mechanical Properties of fluids) Mechanical Properties of Fluids Physics NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Q1:

A viscous liquid is flowing through a straight tube under the action of a pressure difference across the ends of the tube. The tube is aligned with the \(x\)-axis. The force exerted on the tube by the liquid has the form:
\((a,b>0)\)

1.	\(a\hat i\)	2.	\(-a\hat i\)
3.	\(a\hat i+b\hat j\)	4.	\(-a\hat i+b\hat j\)

Subtopic: Viscosity |

From NCERT

1

2

3

4

To view explanation, please take trial in the course.

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Hints

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Q2:

Given below are two statements:

Assertion (A):	The viscosity of a gas decreases as the temperature is increased.
Reason (R):	When temperature increases, the random molecular motion of the gas molecules increases.

1.	Both (A) and (R) are True and (R) is the correct explanation of (A).
2.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.	(A) is True but (R) is False.
4.	(A) is False but (R) is True.

Subtopic: Viscosity |

From NCERT

1

2

3

4

To view explanation, please take trial in the course.

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Hints

To view explanation, please take trial in the course.

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Q3:

A viscous liquid flows slowly through a pipe of cross-sectional radius \(R.\) The speed of the particles is a function of the distance from the axis of the pipe.