Class 11 Exam > Class 11 Videos > Thermodynamics - Laws of thermodynamics
Thermodynamics - Laws of thermodynamics Video Lecture - Class 11
FAQs on Thermodynamics - Laws of thermodynamics Video Lecture - Class 11
| 1. What are the three laws of thermodynamics? |  |
Ans. The three laws of thermodynamics are:
1. The first law, also known as the law of energy conservation, states that energy cannot be created or destroyed, only transferred or transformed.
2. The second law states that the entropy of an isolated system always increases or remains constant in a spontaneous process.
3. The third law states that as the temperature approaches absolute zero, the entropy of a pure crystalline substance approaches zero.
| 2. How does the first law of thermodynamics apply to everyday life? | |
Ans. The first law of thermodynamics, also known as the law of energy conservation, applies to everyday life in various ways. For example, it explains how energy is transferred and transformed in various processes such as heating or cooling a room, cooking food, or operating a car. It helps us understand the principles behind energy conservation and the efficient use of energy in different systems.
| 3. What is the concept of entropy in thermodynamics? | |
Ans. Entropy is a fundamental concept in thermodynamics that measures the degree of disorder or randomness in a system. It is a state function that increases in spontaneous processes and remains constant in reversible processes. Entropy can be thought of as a measure of the system's energy dispersal or the number of ways a system can be arranged. It plays a crucial role in understanding the direction and efficiency of energy transformations and the second law of thermodynamics.
| 4. How does the third law of thermodynamics relate to absolute zero? | |
Ans. The third law of thermodynamics states that as the temperature approaches absolute zero (0 Kelvin or -273.15 degrees Celsius), the entropy of a pure crystalline substance approaches zero. This means that at absolute zero, a perfectly ordered and pure crystalline substance would have no randomness or disorder. The third law helps us understand the behavior of substances at extremely low temperatures and provides a basis for calculating absolute entropies.
| 5. What are some practical applications of the laws of thermodynamics? | |
Ans. The laws of thermodynamics have numerous practical applications in various fields. Some examples include:
- Power plants: The laws govern the efficiency and performance of power generation processes such as steam turbines or internal combustion engines.
- Refrigeration and air conditioning: The laws help in designing and optimizing cooling systems and heat pumps.
- Chemical reactions: The laws guide the understanding of chemical reactions, their equilibrium, and the feasibility of processes.
- Biological systems: The laws explain energy transfer in living organisms, metabolism, and the efficiency of biological processes.
- Environmental science: The laws help in understanding energy transfer in ecosystems, climate systems, and the environmental impact of human activities.
Text Transcript from Video
hello friends this video on
thermodynamics part 2 is brought to you
by exam clear calm no more free from
exam before watching this video please
make sure that you have washed part 1
what about the macroscopic and
microscopic length is discusses so
macroscopic involves large number of
molecules if you see this is water
molecules you see this is a typical
erisa this is a normal water and when I
say macroscopic it means I am viewing a
good number of water molecules maybe
fifty hundred thousands lakhs good
number of water molecules but I don't
want to see only one water molecule it's
of those here or one hydrogen molecule
hydrogen atom or oxygen atom and applied
thermos that is not possible when I want
but like thermodynamics on this I want
to I should take bunch of molecules
together and that is called the
macroscopic system because we know what
macroscopic you take bunch of system
together right and microscopic we'll
talk about microscopic we talk about
atom is number I'm talking about atoms
and talking about the number of protons
the number of electrons it has and the
energy levels of electrons those kind of
thing I'm talking about I'm talking
about a microscopic so it is very simple
if you see talk about the economic
example so macroscopic is like they
cannot be of a country economical
currently and microscopic is nothing but
economy of a individual person
individual person so when they say this
person is rich or poor we can find based
on his final statement how much money he
has let me talk about their economic the
country you talk or the whole country
and then you have other terms with
numbers GDP of the country the export
and import of the country those terms
comes when you talk about the ignore the
car take that level is called may be
that level that type of thing is
macroscopically look at Lawson Oh No if
you consider these atoms as or molecules
as one people you know people combined
becomes one country when you look at the
country level then you talk about the
economy you talk about the Holy Quran
with the current rate of what a GDP of
the country the Export Import and all
this thing looking as perspective you
talk about the microscopic level it
means you're talking about the
individual person income what is
expenditure whereas tax is paying so
things are different right we talk about
the indigent person ignominy doctor low
income tax he's paying and how much is
in earning but we talk about the
macroscopic thing when you talk about
the common the country do not gotta do
taxes pain because the country does not
be in tax right so the different levels
actually or if you want I can explain it
isn't one an example so microscopy you
think in thinking at is a school level
they talk about a school level school
level and microscopy is a student level
so when you talk about student level you
talk about things like what is
percentage what is wrong
attendance percentage it is he coming
ninety percent of days or 20 percent is
or we talk about things like student
height height of student a job student
you talk about there are no other things
parents of student you know about all
these things when you talk about the
microscopic system that is you talking
about student level you know about law
students to either reform school and
then we talk about school level already
supposed to take the class level it's
clear yeah let's take the class level so
we talk about the class then you don't
about the attendance thing because the
class there is no Adam is the class
there is no age for class right so two
things are different you talk about the
macroscopic you talk about me you may
talk about the average your percentage
of the students or you can talk about
the the number of the number of teachers
they have or no the number of bench they
have things are different
so here also microscopic Pentagon
macroscopic you talk about a lot of
molecules in our different times I mean
I
Chris copping eudicot only one money
good and I mean you talk about electrons
to a Down syndrome but case of
thermodynamics we talk about macroscopic
system only get there it involves large
number of molecules right so once again
the law of thermodynamics escorting
system so let us discuss of laws of
thermodynamics so they are various laws
the first law is nothing well zeroth law
actually this is 0 'clock that talks
about thermal equilibrium and the thermo
meter is based on this law so actually
it says that they have three systems
there were three systems a B and C if a
and B are equally William B and C are
eating them that means a and C are also
equally so how's mama to walk since for
example this I apply this kilometres to
some body some object and this is hot
let suppose this is 80 degree Celsius
and it suppose initially Celsius what
will happen and heat will flow from here
to here and our Dana equilibrium since
this is very smart this is very big both
will attain almost 80 degree Celsius
temperature and then heat no this top
and this will become 8 degree Celsius so
thermal equilibrium is something but
some concept which is which you talk and
0 at large is that if you have two
objects and there is a definite in
temperature heat will flow and make sure
that that to object are in thermal
equilibrium then the first law which
talks about the conservation of energy
it says that the relatives of the use
nothing but the change of the internal
energy will discuss this there is
nothing but the sum of heat supplied or
heat taken heat plus for time so
internal heat change is nothing but heat
and workmen so it talks about the
conservation of energy is the energy can
neither be created nor can be destroyed
so if you supply some heat or do some
work on that that will
be reflected in the internal energy
chain then there is something called
second law of thermodynamics which talks
about direction of chemical change and
it say that the entropy of universe is
increasing so we'll discuss this laws
off and then there is a third law of
thermodynamics which states that at
Absolute 0 Kelvin the in trophy of
perfect crystalline is zero that's what
the third law will discuss all these
laws are once again details as someone
to give you a brief of the number of
laws we have for long zero one two three
laws we have in common Amex let's go
this is let's discuss something boron
thermodynamics now so I've discussed all
this things a little bit I just want to
repeat one this these thinkers are
critical come on having this comes not
concerned about how and what rate this
energy transmission take place but only
on the initial and final say for example
my initial state the energy was or let's
suppose X and here my energy well Y
so I'm bothered only about these values
I don't care how you got this in this
power using this part this part on this
I don't care I don't get how you reach
the state example let's suppose there to
this points point a and point B this is
your school playground and this is your
classroom and their various ways of
going from later on the classroom maybe
you can go by computer lab you can go by
a lobby in Cuba root bar you go the
various ways you must be doing that so
it does another matter which be you to
you I just care about whether you in
class soon will you play so that's what
thermalize be really going to care about
this in path which you do you only care
about the initial and final steam it is
applicable only in macroscopic level
that means you have a bunch of molecules
and you see that molecules together and
that level the
country level or the class level and
this is the law of thermodynamics is
applicable only when the system is
equally among one equilibrium state
chocolate so if you see we talk about
equilibrium that system is moving from
once to each one will talk about nice
things there before we start the thumb
identity let's talk about the scope and
limitation of thermodynamics the Scopes
are explanation of properties of matter
explains why this wallet is solid by
liquid is liquid my guest
why matter behaves the way they behave
explains that it predicts the facility
of chemical reaction example if I say h2
plus half O 2 h2o it will tell you it
can tell you whether this is feasible or
not all its suppose if I have my rusting
thing iron plus oxygen use if you do all
three balance this I think this is the
balanced chemical reaction yeah so this
is rusting take place this is the
National Kaname but given this reaction
can be tell so we can we'll discuss how
we can do that the third one is will
help us in telling that it will also
tell the extent to which this reaction
in our example if I have it simple
hundred gram on there's 15 am of this to
what extent reaction will happen so it
will help us later by that but there are
some limitations it will not tell the
speed of them yeah actually the speed in
water it'll not tell the path because
the tour it depends only nation final
step it will not tell the pocket
relation it is not applicable to
microscopic system as I told that
thermodynamics is applicable only at the
macroscopic system at microscopic system
this is not happy
thank you visit exam viacom to watch
free educational videos try free on my
debts get the best quality study
materials study from the best tutors and
mentors and much more
thanks again
thermodynamics part 2 is brought to you
by exam clear calm no more free from
exam before watching this video please
make sure that you have washed part 1
what about the macroscopic and
microscopic length is discusses so
macroscopic involves large number of
molecules if you see this is water
molecules you see this is a typical
erisa this is a normal water and when I
say macroscopic it means I am viewing a
good number of water molecules maybe
fifty hundred thousands lakhs good
number of water molecules but I don't
want to see only one water molecule it's
of those here or one hydrogen molecule
hydrogen atom or oxygen atom and applied
thermos that is not possible when I want
but like thermodynamics on this I want
to I should take bunch of molecules
together and that is called the
macroscopic system because we know what
macroscopic you take bunch of system
together right and microscopic we'll
talk about microscopic we talk about
atom is number I'm talking about atoms
and talking about the number of protons
the number of electrons it has and the
energy levels of electrons those kind of
thing I'm talking about I'm talking
about a microscopic so it is very simple
if you see talk about the economic
example so macroscopic is like they
cannot be of a country economical
currently and microscopic is nothing but
economy of a individual person
individual person so when they say this
person is rich or poor we can find based
on his final statement how much money he
has let me talk about their economic the
country you talk or the whole country
and then you have other terms with
numbers GDP of the country the export
and import of the country those terms
comes when you talk about the ignore the
car take that level is called may be
that level that type of thing is
macroscopically look at Lawson Oh No if
you consider these atoms as or molecules
as one people you know people combined
becomes one country when you look at the
country level then you talk about the
economy you talk about the Holy Quran
with the current rate of what a GDP of
the country the Export Import and all
this thing looking as perspective you
talk about the microscopic level it
means you're talking about the
individual person income what is
expenditure whereas tax is paying so
things are different right we talk about
the indigent person ignominy doctor low
income tax he's paying and how much is
in earning but we talk about the
macroscopic thing when you talk about
the common the country do not gotta do
taxes pain because the country does not
be in tax right so the different levels
actually or if you want I can explain it
isn't one an example so microscopy you
think in thinking at is a school level
they talk about a school level school
level and microscopy is a student level
so when you talk about student level you
talk about things like what is
percentage what is wrong
attendance percentage it is he coming
ninety percent of days or 20 percent is
or we talk about things like student
height height of student a job student
you talk about there are no other things
parents of student you know about all
these things when you talk about the
microscopic system that is you talking
about student level you know about law
students to either reform school and
then we talk about school level already
supposed to take the class level it's
clear yeah let's take the class level so
we talk about the class then you don't
about the attendance thing because the
class there is no Adam is the class
there is no age for class right so two
things are different you talk about the
macroscopic you talk about me you may
talk about the average your percentage
of the students or you can talk about
the the number of the number of teachers
they have or no the number of bench they
have things are different
so here also microscopic Pentagon
macroscopic you talk about a lot of
molecules in our different times I mean
I
Chris copping eudicot only one money
good and I mean you talk about electrons
to a Down syndrome but case of
thermodynamics we talk about macroscopic
system only get there it involves large
number of molecules right so once again
the law of thermodynamics escorting
system so let us discuss of laws of
thermodynamics so they are various laws
the first law is nothing well zeroth law
actually this is 0 'clock that talks
about thermal equilibrium and the thermo
meter is based on this law so actually
it says that they have three systems
there were three systems a B and C if a
and B are equally William B and C are
eating them that means a and C are also
equally so how's mama to walk since for
example this I apply this kilometres to
some body some object and this is hot
let suppose this is 80 degree Celsius
and it suppose initially Celsius what
will happen and heat will flow from here
to here and our Dana equilibrium since
this is very smart this is very big both
will attain almost 80 degree Celsius
temperature and then heat no this top
and this will become 8 degree Celsius so
thermal equilibrium is something but
some concept which is which you talk and
0 at large is that if you have two
objects and there is a definite in
temperature heat will flow and make sure
that that to object are in thermal
equilibrium then the first law which
talks about the conservation of energy
it says that the relatives of the use
nothing but the change of the internal
energy will discuss this there is
nothing but the sum of heat supplied or
heat taken heat plus for time so
internal heat change is nothing but heat
and workmen so it talks about the
conservation of energy is the energy can
neither be created nor can be destroyed
so if you supply some heat or do some
work on that that will
be reflected in the internal energy
chain then there is something called
second law of thermodynamics which talks
about direction of chemical change and
it say that the entropy of universe is
increasing so we'll discuss this laws
off and then there is a third law of
thermodynamics which states that at
Absolute 0 Kelvin the in trophy of
perfect crystalline is zero that's what
the third law will discuss all these
laws are once again details as someone
to give you a brief of the number of
laws we have for long zero one two three
laws we have in common Amex let's go
this is let's discuss something boron
thermodynamics now so I've discussed all
this things a little bit I just want to
repeat one this these thinkers are
critical come on having this comes not
concerned about how and what rate this
energy transmission take place but only
on the initial and final say for example
my initial state the energy was or let's
suppose X and here my energy well Y
so I'm bothered only about these values
I don't care how you got this in this
power using this part this part on this
I don't care I don't get how you reach
the state example let's suppose there to
this points point a and point B this is
your school playground and this is your
classroom and their various ways of
going from later on the classroom maybe
you can go by computer lab you can go by
a lobby in Cuba root bar you go the
various ways you must be doing that so
it does another matter which be you to
you I just care about whether you in
class soon will you play so that's what
thermalize be really going to care about
this in path which you do you only care
about the initial and final steam it is
applicable only in macroscopic level
that means you have a bunch of molecules
and you see that molecules together and
that level the
country level or the class level and
this is the law of thermodynamics is
applicable only when the system is
equally among one equilibrium state
chocolate so if you see we talk about
equilibrium that system is moving from
once to each one will talk about nice
things there before we start the thumb
identity let's talk about the scope and
limitation of thermodynamics the Scopes
are explanation of properties of matter
explains why this wallet is solid by
liquid is liquid my guest
why matter behaves the way they behave
explains that it predicts the facility
of chemical reaction example if I say h2
plus half O 2 h2o it will tell you it
can tell you whether this is feasible or
not all its suppose if I have my rusting
thing iron plus oxygen use if you do all
three balance this I think this is the
balanced chemical reaction yeah so this
is rusting take place this is the
National Kaname but given this reaction
can be tell so we can we'll discuss how
we can do that the third one is will
help us in telling that it will also
tell the extent to which this reaction
in our example if I have it simple
hundred gram on there's 15 am of this to
what extent reaction will happen so it
will help us later by that but there are
some limitations it will not tell the
speed of them yeah actually the speed in
water it'll not tell the path because
the tour it depends only nation final
step it will not tell the pocket
relation it is not applicable to
microscopic system as I told that
thermodynamics is applicable only at the
macroscopic system at microscopic system
this is not happy
thank you visit exam viacom to watch
free educational videos try free on my
debts get the best quality study
materials study from the best tutors and
mentors and much more
thanks again
Related Exams
About this Video
|
4.74/5 Rating |
|
Dec 04, 2024 Last updated |
Thermodynamics - Laws of thermodynamics for Class 112024 is part of Class 11 preparation. The notes and questions for Thermodynamics - Laws of thermodynamics
have been prepared according to the Class 11 exam syllabus. Information about Thermodynamics - Laws of thermodynamics covers all important topics
for Class 112024 Exam. Find important definitions, questions, notes, meanings, examples, exercises
and tests below for Thermodynamics - Laws of thermodynamics.
Description
Video Lecture & Questions for Thermodynamics - Laws of thermodynamics Video Lecture - Class 11 - Class 11 full syllabus preparation | Free video for Class 11 exam.
Information about Thermodynamics - Laws of thermodynamics
Here you can find the Thermodynamics - Laws of thermodynamics defined & explained in the simplest way possible. Besides explaining types of Thermodynamics - Laws of thermodynamics
theory, EduRev gives you an ample number of questions to practice Thermodynamics - Laws of thermodynamics tests, examples and also practice Class 11 tests.
|
Explore Courses for Class 11 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
Summary
,MCQs
,video lectures
,Thermodynamics - Laws of thermodynamics Video Lecture - Class 11
,ppt
,Thermodynamics - Laws of thermodynamics Video Lecture - Class 11
,study material
,Thermodynamics - Laws of thermodynamics Video Lecture - Class 11
,Sample Paper
,Semester Notes
,practice quizzes
,Previous Year Questions with Solutions
,Viva Questions
,past year papers
,Exam
,shortcuts and tricks
,Important questions
,Objective type Questions
,Extra Questions
,mock tests for examination
,Free
;
Study Thermodynamics - Laws of thermodynamics on the App
Students of Class 11 can study Thermodynamics - Laws of thermodynamics alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Thermodynamics - Laws of thermodynamics,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Thermodynamics - Laws of thermodynamics is prepared as per the latest Class 11 syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup