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Q. No.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 -axis. The force exerted on the tube by the liquid has the form:
| 1. | 2. | ||
| 3. | 4. |
Subtopic: Viscosity |
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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 |
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A viscous liquid flows slowly through a pipe of cross-sectional radius The speed of the particles is a function of the distance from the axis of the pipe.
Assume that the flow is smooth. The variation of vs is best given by the graph:
Assume that the flow is smooth. The variation of vs is best given by the graph:
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2. |  |
| 3. |  |
4. |  |
Subtopic: Viscosity |
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Q. No.
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