Question: It is known that the flow through a pipe is laminar. If the diameter of the pipe is reduced to half while the discharge remains

It is known that the flow through a pipe is laminar. If the diameter of the pipe is reduced to
half while the discharge remains the same, which one of the following statements is
incorrect?
a. The friction coefficient will become twice the previous friction coefficient
b. The pressure drop between two points will become 18 of the previous pressure drop
c. The friction force at the pipe wall will become half of the previous friction force
d. The pump power required to overcome the frictional loss will become half of the
previous pump power requirement
It is known that the flow through a pipe is

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