Class XI

If a pipe carrying incompressible liquid has an area A1A1 and velocity V1V1 at one point A2A2 and V2V2 at another point, the equation of continuity gives the relation
  1. A1V1=A2V2
  2. A1V1=2A2V2
  3. A1V1=3A2V2
  4. A1V1=2A2V
Gauge pressure at a point is
  1. pressure at that point – atmospheric pressure
  2. (pressure at that point + atmospheric pressure)/2
  3. (pressure at that point – atmospheric pressure)/2
  4. pressure at that point + atmospheric pressure
in laminar flow
  1. adjacent layers of fluid move in circle crossing each other each other and the flow is steady
  2. adjacent layers of fluid slide smoothly past each other and the flow is unsteady
  3. adjacent layers of fluid do not slide smoothly past each other and the flow is unsteady
  4. adjacent layers of fluid slide smoothly past each other and the flow is steady
The units of pressure in SI system is
  1. Pascal
  2. Newton
  3. Watt
  4. Joule
According to Pascal’s law for transmission of fluid pressure external pressure applied on any part of a fluid contained in a vessel is ___________________ in all directions
  1. not transmitted
  2. transmitted and increased
  3. transmitted undiminished and equally
  4. transmitted and decreased
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