Download App

Mechanical Properties of Fluids — Physics STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 SciencePhysicsMechanical Properties of Fluids2 Marks
Question
Explain why flow speed is greatest where streamlines are closest together.
✓

Answer

By the equation of continuity, the flow speed is inversely proportional to the area of cross section of a flow tube. Where the area of cross section is small, i. e., streamlines are close, the flow speed is large and vice versa.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Short Answer Type Question" from Mechanical Properties of Fluids→Mechanical Properties of Fluids — all question types→Physics STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

If the angular speed of a particle in UCM is $20 \pi \mathrm{rad} / \mathrm{s}$, what is the period of UCM of the particle?
→
Explain Biot and Savart's law with suitable diagram.
→
An iron rod of area of cross-section \(0.1 m ^2\) is subjected to a magnetising field of \(1000 A / m\). Calculate the magnetic permeability of the iron road. [Magnetic susceptibility of iron \(=59.9\); Magnetic permeability of vacuum \(=4 \pi \times 10^{-7} S\). I. Unit.]
→
Disintegration rate of a radio-active sample is $10^{10}$ per hour at 20 hours from the start. It reduces to $5 \times 10^9$ per hour after 30 hours. Calculate the decay constant.
→
What is the magnetic field $(i)$ outside $(ii)$ inside a long air$-$cored current$-$carrying solenoid ?
→
Unpolarized light is incident on a plane glass surface. What should be the angle of incidence so that the reflected and refracted rays are perpendicular to each other? [Given $n=1.5$ ]
→
An alternating $emf$ is given by $e=2.20 \sin \omega t ($in volt$).$ What will be its value at time $t=\frac{T}{12}$ ?
→
Obtain the dimensions of force constant in SHM.
→
What is meant by a steady flow?
→
Draw a neat labelled circuit diagram for transistors as common emitter amplifiers.
→