A certain number of spherical drops 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 :
energy is neither released nor absorbed.
As we discussed in
Since initial volume = final volume
Let's say number of drops = N
Then energy released =
n = number of drops
Total volume =
Or
Energy released =
Option 1)
This option is incorrect.
Option 2)
This option is incorrect.
Option 3)
This option is correct.
Option 4)
energy is neither released nor absorbed.
This option is incorrect.