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In this question, we need to choose the correct statement related to steady horizontal flow from the given four options.
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Option a is given as the pressure is greatest where the speed is leased.
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Option b is the pressure is independent of speed.
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Option c is the pressure is least where the speed is least.
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Option d is a and c are correct.
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For this, what we do, we will consider a two -dimensional pipe whose cross -section changes from a1 to a2.
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Let us consider this is section 1 and this one is the section 2.
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From this figure itself, it is very clear that the cross -sectional area, a1, is greater than a2.
01:08
A1 is greater than a2.
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Consider some liquid is flowing through this varying cross -section pipe.
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Let us apply the continuity equation.
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A1, v1 is equal to a2 v2 for the incompressible fluid.
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So from this we can write v1 is equal to a2 v2 by a1.
01:46
From this you can find that the cross -sectional area is small, that is the a2 is small and a1 is bigger.
01:58
Therefore this right -hand -side quantity will be less than the left -hand side.
02:06
Therefore we can say that b1 is less than b2.
02:14
Okay, let it be.
02:23
Now, you will apply the bernoulli's equation between the section 1 and 2...