### Q.15:- Figures 10.23 (a) and (b) refer to the steady flow of a (non-viscous) liquid. Which of the two figures is incorrect? Why?

**Answer:-**Fig. (a) is incorrect. Accoridng to equation of continuity, i.e.,

*av*= Constant, where area of cross-section of tube is less, the velcoity of liquid flow is more. So the velocity of liquid flow at a constriction of tube is more than the other portion of tube.Accroding to Bernoulli’s Theorem,

*P*+ 1/2*ρv*^{2 }= Constant, where*v*is more,*P*is less and vice versa.