# MHT-CET Physics Crash Course “Fluid in Motion and types of Flow” Class 12

## “Fluid in Motion and types of Flow” MHT-CET Class 12 Physics Crash Course | Chapter Mechanical Properties of Fluids

In this session G.S. Khairnar discussed the theory and MCQ’s of “Fluid in Motion and types of Flow”. The session will be useful for all the aspirants of MHT-CET 2022. The session will be in Marathi and English.

### Fluid in Motion and types of Flow:-

Welcome back dear students, in previous articles we had learnt the properties of fluid at rest. Now in this article we are going to discuss the properties of fluid in motion.

The branch of physics that deals with the study of properties of fluid in motion is called hydrodynamics.

Due to very less intermolecular force of attraction between the molecules of fluid, it always tends to move freely within container. When liquid flows it follows certain parameters on the basis of which we are going to describe the motion of fluid.

Let’s discuss the concept.……………!

Consider the fluid is moving through the pipe as shown in fig. When fluid is in motion, every particle of fluid is following the specific path during the motion with certain velocity as shown in fig.

The liquid is considered as made up of large number of different layer. These layers are parallel to each other and each layer travels with different speed. The speed/velocity of layers is responsible to discuss the type of flow. To describe the motion of fluid in detail, let’s discuss few definitions as follows…

1. Flow path: The path followed by single particle during its motion is called as flow path.
2. Stream line: The tangent drawn at any point on the curve of flow path, which defines the direction of flow of fluid.
3. Tube of flow: Imaginary tube through which the flow of fluid is studied is called as tube of flow.

On the basis of velocity and pattern of flow, the motion of liquid is classified into two types i.e. stream line flow and turbulent flow.

Streamline flow:

1. The flow of liquid in which velocity of individual layer remains constant throughout the motion is called as streamline flow or laminar flow.
2. The velocity of all the layers should be less than certain velocity known as critical velocity.
3. Tangents drawn to all the streamlines are always parallel to each other and they never intersect to each other.
4. The flow appears very smooth, regular and steady.
5. Eg. The motion of water flowing through pipe, motion of river water on plane surface etc.

Turbulent flow:

1. The flow of liquid in which velocity of individual layer do not remains constant throughout the motion is called as turbulent flow.
2. The velocity of all the layers always greater than certain velocity known as critical velocity.
3. Tangents drawn to all the streamlines do not remain parallel to each other can intersect to each other.
4. The flow appears irregular and disturbed.
5. Eg. Motion of water falling from the peak of mountain.

### Fluid in Motion and types of Flow:-

Let’s solve the following MCQ’s….!

Q.1) The branch of physics that deals with the study of motion of fluid is known as….

a) thermodynamics

b) hydrodynamics

c) thermostatic

d) hydrostatic

b) hydrodynamics

Q.2) The tangent drawn at any point on the curve of flow is known as….

a) streamline

b) fluid line

c) flow line

d) flow tangent

a) streamline

Q.3) The flow of fluid in which the velocity of layers of fluid is remains constant throughout is termed as….

a) Turbulent flow

b) Regular flow

c) Streamline flow

d) None of these

c) Streamline flow

Q.4) The flow of fluid in which the velocity of layers of fluid do not remains constant throughout is termed as….

a) Turbulent flow

b) Regular flow

c) Streamline flow

d) None of these

a) Turbulent flow

Q.5) The flow of fluid in which the tangent drawn to the flow path are always parallel is known as…

a) Turbulent flow

b) Regular flow

c) Streamline flow

d) None of these

c) Streamline flow

Q.6) Which amongst the following in correct for streamline flow?

a) velocity of all is less than critical velocity

b) streamlines are always parallel to each other

c) streamlines never intersect to each other

d) all of these

d) all of these

### ♦जिल्हा नुसार जाहिराती ♦

अहमदनगर अकोला अमरावती औरंगाबाद भंडारा बुलढाणा
चंद्रपुर धुले गढ़चिरौली गोंदिया हिंगोली जलगांव
जालना कोल्हापुर लातूर मुंबई नागपुर नांदेड़
नंदुरबार नाशिक उस्मानाबाद पालघर परभानी पुणे
रायगढ़ रत्नागिरि सांगली सातारा सिंधुदुर्ग सोलापुर
ठाणे वर्धा वाशिम यवतमाल बीड

### ♦शिक्षणानुसार जाहिराती ♦

७ वी (7th) दहावी (SSC) बारावी (HSC) डिप्लोमा आय.टी.आय पदवी
पदव्युत्तर शिक्षण बी.एड एम.एड एल.एल.बी / एल.एल.एम बीएससी एमबीए
बीसीए एमसीए बी.कॉम एम.कॉम GNM/ANM एमएससी
बी.फार्म एम.फार्म बी.ई एम.ई BAMS/BHMS एम.बी.बी.एस / एम.डी
बी.टेक एम.टेक MS-CIT