NEET Physics Bernoulli's Principle Assertion Reason Question
Assertion (A): In a streamline flow of an incompressible fluid through a pipe of varying cross-sectional area, the pressure is lower where the speed is greater. | Reason (R): According to Bernoulli's principle, the sum of pressure energy, kinetic energy per unit volume, and potential energy per unit volume remains constant along a streamline.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
Correct Answer
Detailed Explanation
Bernoulli's principle states that in a steady flow of an incompressible fluid, the sum of the pressure energy, kinetic energy, and potential energy per unit volume is constant. Therefore, if the kinetic energy increases due to higher speed, the pressure energy must decrease, leading to lower pressure.
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