Question

Figures (a) and (b) refer to the steady flow of a (non-viscous) liquid. Which of the two figures is incorrect? Why?

Answer 1

Hey Hello Champ

Well steady flow a fluid means that the velocity of all the particles at a particular point is always constant. That is if we take a snapshot at a particular instant and then we again take a snapshot after certain time then both the snapshots taken will appear to be same

It follows the equation , A1V1=constant

where,

A=area V=volume

Note :- product of AV gives you the rate of flow of the fluid through  a cross section

Now as the area decreases the velocity of the liquid increases hence in figure  "a" at the first tube hole the area is very large so the velocity is very small and thus the magnitude of velocity decreases and thus this allows the water to flow more in random direction , while at the second tube hole the velocity is very high and hence the magnitude in a particular direction is also very large and thus water has less chance to flow in random direction hence considering these reasons fig "a" is incorrect while figure "b" is correct

Hope this helps !!  ^_^

Answer 2

Answer:

(a) is incorrect .

Reason:- form equation of continuity , the speed of liquid is larger at smaller area . according to Bernoulli's theorem due to larger speed the pressure will be lower at smaller area and therefore height of liquid also be at lesser height , while height of liquid at narrow area in higher.

Explanation: