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JEE Advanced2008PhysicsMechanical Properties of FluidsActual

Statement 1 The stream of water flowing at high speed from a garden hose pipe tends to spread like a fountain when held vertically up, but tends to narrow down when held vertically down. and Statement 2 In any steady flow of an incompressible fluid, the volume flow rate of the fluid remains constant.

Options

  1. AStatement 1 is true, Statement 2 is true, Statement 2 is a correct explanation for Statement 1.
  2. BStatement 1 is true, Statement 2 is true, Statement 2 is not a correct explanation for Statement 1.
  3. CStatement 1 is true, Statement 2 is false.
  4. DStatement 1 is false, Statement 2 is true

Correct answer

A. Statement 1 is true, Statement 2 is true, Statement 2 is a correct explanation for Statement 1.

Step-by-step solution

From continuity equation, A v= constant or A 1 v At lower heights, speed will be more. Therefore, area of cross-section will be less. correct option is (a).

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