Select the correct one from the statements given below: (i) At any point in a static fluid, pressure acting on it will be same in all directions. (ii) Forces acting on a fluid in equilibrium have to be parallel to the surface.
A
(i) only
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B
(ii) only
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C
Both (i)&(ii)
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D
None of these.
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Solution
The correct option is A(i) only
At any point in a static fluid, pressure will be the same in all directions because the point will be at rest. ⇒P1=P1=P2=P3=P4=P5=P6
Hence, statement (i) is correct. ∵ fluid cannot sustain shear stress, hence forces acting on the fluid in equilibrium have to be perpendicular to the free surface of the fluid.