The speed of efflux of a liquid streaming out of an orifice 'O' in a tank depends on:
Correct answer: D. h2-h1
- A. Can't be predicted
- B. h2
- C. h1
- D. h2-h1
Explanation
v=√2g(h1-h2 ; where h1-h2 is the height above the orifice which is directly proportional to v.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Fluid Dynamics
Fluid flow is described through speed, pressure and density, including steady flow and the equation of continuity for conserving mass. Bernoulli's equation relates pressure, speed and height, while fluid drag and terminal velocity explain why a falling object eventually moves at constant speed when drag balances its weight.
Practise Fluid Dynamics
366 free Fluid Dynamics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Fluid Dynamics questions
Which figure shows correct representation of water level in capillaries attached with a pipe in which water is flowing
The diagram shows a pipe of uniform cross section in which water is flowing. The directions of flow and the volume flow rates in cm³/s are shown for various portions of the pipe. The direction of flow and the volume flow rate in the portion marked A are:
Which of the following is the best graphical representation between drag force 'F' on a spherical object of radius 'r' and its speed 'v' through a fluid of viscosity 'η'?
Pressure of a gas is directly proportional to:
Two light balls are suspended as shown in the figure. When a stream of air passes between them, the pressure between them:
A liquid flows through a tube of non-uniform area of cross- section, the ratio of velocities of liquid A to B is: