Discharge of centrifugal pump is

Q. Power required to drive a centrifugal pump is directly proportional to __________ of its impeller.

Q. A spherical body of diameter D is falling in viscous medium. Its terminal velocity is proportional to:

Q. Assertion :When a wire is stretched to two times its length keeping the diameter same, its resistance becomes $4$ times Reason: Resistance is directly proportional to length of wire

Q. Consider the following statements regarding the K.E of a freely falling body :
a) is directly proportional to height of its fall
b) is inversely proportional to height of its fall
c) is directly proportional to square of time of its fall
d) is inversely proportionl to square of time of its fall

Q. how resistance is inversely proportional to square of diameter