When small droplets floating in atmosphere merge into each other in clouds, they become heavy and cannot float in air and fall down as rain drops. In this process of formation of bigger drops if 'n' small drops each of radius 'r', surface tension “T” coalesce. ThenWhen smaller drops combine energy is released or absorbed, which is given by

When small droplets floating in atmosphere merge into each other in cl

1.	When small droplets floating in atmosphere merge into each other in clouds, they become heavy and cannot float in air and fall down as rain drops. In this process of formation of bigger drops if 'n' small drops each of radius 'r', surface tension “T” coalesce. ThenWhen smaller drops combine energy is released or absorbed, which is given by
Answer» ENERGY released`= 4 pi R^3 ((1)/(R ) - (1)/(r ) )T` Energy released `= 4 piR^3 ((1)/(r) - (1)/(R ))T ` Energy absorbed `= 4PI R^3 ((1)/(R) - (1)/( r ) ) T ` Energy absorbed `= 4pi R^3 ((1)/(r )-(1)/(R )) T` Answer :B