Question

In Bernoulli's theorem, which of the following is constant?

• A. Linear momentum
• B. Angular momentum
• C. Mass
• D. Energy

Hint:

Bernoulli's theorem = Conservation of Energy for fluids. The equation \( P + \frac{1}{2}\rho v^2 + \rho gh = \text{constant} \) represents pressure energy, kinetic energy, and potential energy.

Answer 1

The Correct Option is D

Bernoulli's theorem is a statement of the principle of conservation of energy for a flowing fluid. It states that for an ideal fluid in steady flow, the sum of its pressure energy, kinetic energy per unit volume, and potential energy per unit volume remains constant along a streamline. Therefore, it is the total energy of the fluid that is conserved.