Eight spherical rain drops of the same mass and radius are falling down with a terminal speed of 6 cm 
. If they coalesce to form one big drop, what will be its terminal speed? Neglect the buoyancy due to air.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Terminal velocity 
Let r be the radius of small drop and R the radius of big drop
8 drops
1drop
cm 
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