MHT CET202121 Sep 2021Evening ShiftPhysicsMechanical Properties of FluidsActual
A big water drop is divided into 8 equal droplets. P _ S and P _ B be the excess pressure inside a smaller and bigger drop respectively. The relation between P _ S and P _ B is
Options
- AP _ B = P _ S
- BP _ B = 1 2 P _ S
- CP _ B = 1 4 P _ S
- DP _ B =2 P _ S
Correct answer
B. P _ B = 1 2 P _ S
Step-by-step solution
Volume of 8 smaller drop = Volume of the bigger drop aligned & 8 4 3 r^3= 4 3 R^3 & 2 r=R or r= R 2 aligned Excess pressure P _ s = 2 ~T r and P _ B = 2 ~T R P _ B P _ S = r R = 1 2