Bernoulli’s equation is applicable to points:

Physics Fluid Mechanics Continuity Equation and Bernoulli Theorem & Their Application Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: September 12, 2026

in a steadily flowing liquid

in a stream line

in a straight line perpendicular to a stream line

for ideal liquid stream line flow on a stream line

Text Solution

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The correct answer is:

Bernoulli's equation is derived under certain assumptions for ideal fluid flow.

Step 1: Understand that Bernoulli's equation states that in an ideal fluid, at any two points along a streamline, the sum of the pressure energy, kinetic energy per unit volume, and potential energy per unit volume remains constant.
Step 2: Recognize the conditions for applicability: The fluid must be incompressible and non-viscous, and the flow must be steady and along a streamline.
Step 3: Among the options provided:
- Option A refers to a steady liquid flow but does not specify the streamline condition.
- Option B refers to points in a streamline but does not emphasize ideal conditions.
- Option C refers to points perpendicular to a streamline which do not meet Bernoulli’s conditions.
- Option D specifies ideal liquid and streamline flow, which correctly describes where Bernoulli's equation holds true.

Therefore, the correct answer is D.

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