# 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 : Option 1) Option 2) Option 3) Option 4) energy is neither released nor absorbed.

Answers (1)

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.

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