A large number of droplets, each of radius a, coalesce to form a bigger drop of radius `b`. Assume that the energy released in the process is converted into the kinetic energy of the drop. The velocity of the drop is `sigma =` surface tension, `rho =` density)
A. `[(sigma)/(rho)((1)/(a)-(1)/(b))]^(1)/(2)`
B. `[(2sigma)/(rho)((1)/(a)-(1)/(b))]^((1)/(2))`
C. `[(3sigma)/(rho)((1)/(a)-(1)/(b))]^((1)/(2)`
D. `[(6sigma)/(rho)((1)/(a)-(1)/(b))]^((1)/(2))`