A) directly proportional to R but inversely proportional to v
B)
directly proportional to both radius R and velocity v C)
Inversely proportional to both radius R and velocity v.
D)
Inversely proportional to R but directly proportional to velocity v.
Correct Answer:
B Solution :
where, R = radius of ball, v = velocity of ball, and coefficient of viscosity. and Or in words, retarding force is directly proportional to both R and v.
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