A certain number of spherical drops of a liquid of a liquid of radius r coalesce to form a single drop of radius R and volume V. if T is the surface tension of the liquid, then

A certain number of spherical drops of a liquid of a liquid of radius

1.	A certain number of spherical drops of a liquid of a liquid of radius r coalesce to form a single drop of radius R and volume V. if T is the surface tension of the liquid, then
Answer» `"ENERGY"=4VT(1/R-1/R)"is released"` `"energy"=3VT(1/r+1/R)"is absorbed"` `"energy"=3VT(1/r-1/R)"is released"` energy is NEITHER released nor absorbed. Solution :`A_f=4piR^2=3/34pi(R^3)/( R)=(3V)/(R )` `A_i=nxx4pir^2=(V)/(4/3 PI r^3)4pir^2=(3V)/( r)` Hence, energy released `=(A_i-A_f)T=3VT(1/r-1/R)`