The terminal velocity v of a small steel ball of radius r falling under gravity through a column of viscous liquid of coefficient of viscosity 
depends on mass of the ball m, acceleration due to gravity g, coefficient of viscosity 
and radius r. Which of the following relations is dimensionally correct?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
, i.e. v has the dimensions of 
or 
.
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