Figures 10.23 (a) and (b) refer to the steady flow of a (non-viscous) liquid. Which of the two figures is incorrect? Why? | Learn NCERT solution | Education portal Class 11 Physics | Study online Unit-10 Mechanical Properties of Fluids



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