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What is the correct answer?


The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly enlarged to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden enlargement is

A. (v₁ - v₂)²/g

B. (v₁² - v₂²)/g

C. (v₁ - v₂)²/2g

D. (v₁² - v₂²)/2g

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