I have seen on many internet platforms they have mentioned that snell's law is not valid for normal incidence. Even in the schools teachers use to teach that snell's law is not valid. From past three years I am regularly teaching and telling students that don't go with the misconceptions. Snell's law is valid in every condition but students Aaj line on some websites which are no authentic information. Thanks to HC VERMA SIR
And the whole india is still have that IAS/IIT fever Kisi ko na padhne ka hai na smjhne ka hai sbko bs iit me jana hai aur 9 to 5 karna hai 🥱 Hats off to you public Hc verma sir ❣️ the greatest of all time ⚡
The Symmetry concept explained here is really interesting and important. The Symmetry around the normal to interface between medium plays an important role in optical refraction. It is not something associated with light rather with the distribution of internal constituent of material through which light is passing during its refraction.... Thank you Sir, you are one of best science teacher and popularizer of our country.
The speed of light is changing in denser medium. When ray of light falls normally on the interface, then it does not bend. It means that the time period is not constant and will take longer time to pass because of less speed of light,but time period is always constant. How is this possible? Please answer this in this way not in sin i / sin r = 0 hope you will ans to my doubt
@@KavitaYadav-ul8fb Time period and frequency of a wave (the interrelation f=1/T) depends upon source frequency and due this reason unless the repeatability or periodicity of source is affected, medium is not going to affect both frequency and time period. The velocity of light varies on passing from one medium to another medium because of the variation in wavelength. C = frequency1× wavelength 1 in vacuum. When it gets into another medium C changes to let V. Then V = frequency 1× wavelength 2. The variation in the wavelength (the spatial gap between two repetitions) is the reason behind changing of velocity. Again the bending of light for case oblique incidence is beautifully explained in Electromagnetic theory. See Fresnels theory of refraction and reflection in EMT.
I argued my science teacher regarding this topic for a whole period of 45 mins. He was saying that no refraction occurs when light incident normally to the surface but I was not satisfied because whatever the angle is... Change in velocity, wavelength, amplitude still occurs. So why not to call it refraction?? Because of only unchanged direction?? Definitely not. Because as sir mentioned here... Bending is sign of refraction but not itself refraction. I 100% convinced my teacher with my points to accept this as refraction. Thank u for he video sir... Big fan👍
in text books, these days, it is clearly written that the change in speed of light ..... is called refraction. In refraction, bending of path happens except for normal incidence. Then, why do the teachers stress on Bending...
इलेक्ट्रान किस कारण से किसी चालक में एक स्थान से दूसरे स्थान पर जाते हैं? वह बल जिसे विभव कहा जाता है यानी वोल्टेज- वह पैदा कहाँ से होता है? क्या फोटानों से !
Voltage is created from potential difference between two charged particles,if you have a positive pole and there are two electrons near it the closer electron will face more force and will have more potential than other,this difference in the potential is called potential difference.this difference is needed to create flow of electron.
Voltage can be easily defined as it is a ability battery to charge electrons for example electron round in conductor and get discharge than again they came in battery and battery will charge this electron that is know as volt and it is the unit of potential diffence
Light is a sine wave having plus and minus electric monopoles. Moment is necessary for bending, which requires force and moment arm. Inclined light beam has a downward component of electric field which produces downward force due to attraction between opposing electric monopoles and moment arm, as a result light beam rotates towards normal in denser medium like clock pendulum. In normal incident light beam there is no downward component of electric field or downward force. Also there is no moment arm the light beam therefore travels straight through denser medium without bending.
Sir you said, for normal incidence(0°) also snell's law is valid as asked in the doubt also, but in the book it is given snell's law is valid only of angle i is between 0 and 90. Internet showing varied answers, can you please tell?
Sir I'm student of class 10 2022-2023 and I'm CONFUSED because in our NCERT The second law of refraction says The ratio of sine of angle of incidence to the sine of angle of refraction is a constant for the light of given colour and for the given pair of media This law is also known as snell's law of refraction **And SNELL'S LAW SAY THAT THIS IS TRUE THAT ANGLE OF INCIDENCE NEVER BE EQUAL OR PERPENDICULAR TO 90° ( 0
Hey! As we know that electrons are negatively charged ions and cathode is also a negatively electrode which means it is made of negatively charged electrons. And anode is positively charged. We know that electrons (negatively charged ions move from negative to positive electrodes) that is they move from negatively charged cathode to positively charged anode Hope you'll get it. If still there's a question, you can ask me out Thank you! Regards Urvashi :)
Sir ham light ka refraction , reflection law prove Krneka samaihi to +or- sign la late hai lekin mathemetical problem solve Karne ka Samai fir se sign Kiu Lena parta hain....??
Abhay Pratap Singh It does deviate, but as the lens which is used is so thin , that the deviation is negligible, so even in textbooks it is written that we use thin lenses, after all we imagine the centre as glass slab, and deviation in glass slab is directly proportional to thickness of slab
Thinking causally if we are travelling in a bus and suddenly brakes are applied than a wave in contact to the floor of the bus is being generated and supposing the friction acts opposite to the wave generated if we can manage to equal the magnitudes of both the generated waves then no person will get a forward push in the bus.Sir can this be possible?
Sir....... I would very much recommend a playlist for topics on physics...... Where you teach every basic topic in accordance with the syllabus, so that we have a uniform studying structure. And have a QnA ( question and answer) session for the topic that you have taught in the previous video. Hope you see this comment...... Thank you very much sir.... Wish you great health!!!
Sir when a light ray travel from denser medium to rarer medium why should it bend away from the normal aur when it travels from rarer to denser medium why should it bend towards the normal
Sir i am suryaksh student of class 10 sir i want to ask that if 2 stars in the universe are having the same gravity and they may lie nearer to each other ( hopefully this doesn’t make much sense) but still the lie they what will happen if collsion occurs than tell me that what makes the collision to occur
sir if in dielectric Electric field in capacitor = Enot /k so Capcitance becomes k Cnot and P.D becomes Vnot/k but Electrostatic Energy of capacitor having dielectric=1/2CV^2 d does not becomes 1/2k Cnot ( Vnot/k)^2= initial energy/k though it becomes 1/2k ebslen E^2 which is equals to k initial energy so why not above condition satisfies.??
Sir I have one question to you that when light Re obliquely goes too rare to denser it bends but when light goes perpendicular why does not bend what is the reason behind please kindly help me and my name is Saurav kumar from class 10
Sir, in following velocity in media 1/ velocity in media 2 (v1/v2) is equals to 1/u(mew).. Hence, it can be observed by refractive index is inversly proportional to velocity in media
Sir aapki book ''concepts of physics '' me drift velocity ka Jo formula hai vo galat hai....kyuki hamm single electron ki nhi multiple electron ki average velocity lete hai matlb Sahi equation hoga (V=eEt/m).wo V=eEt/2m single particle ke liye aayega . Sir mujhe 1 bar confirm kr dijiye comment krke
Hello sir! Sir I've a request. Can you please make videos for the basic concepts of the physics of class 10. Like concepts that will give us a clarity well enough to solve any problem. It would be a privilege to clear my fundamentals from you sir. Thank you:)
Respected sir....if you upload all lecture of CONCEPT OF PHYSICS with questions and explanation then all market of education system of India will close ....but it's beneficial for weaker sections of society .....sir please do these.....for your satisfaction of your country......
Education chahiye free mein aur engineer banke lakho kamoyege waah re hypocrisy. Education agar free mein loge to engineer banne ke baad salary mat lena ya us salary ko daan kardena bolo hai himmat
I appreciate the curiosity and imagination of Shivam Saurabh...keep it up👍👍👍
True
Very nice explanation Sir. Thank you
To understand refraction of light ICSE 2020-21 of class 10
m.th-cam.com/play/PLpzWoho73qlLxP-6B-XNaa3aYXXiLxUN3.html
Mere ye saal yahin doubt aya
@@rkp8495 pagal sala.nonsense
"Bending is because of refraction, refraction itself is not bending"... Class 10 ncert left the chat🗿
😂
Let class 10 NCERT go to hell..... Here is the physicist to decide what is refraction 😂😂
@@hasnainraza022 ya thats fundamentally correct but BOARD perspective se galat.
What to do.😭
THANKS SIRRR.
MY CONCEPTS ARE CLEAR NOW....
THANKS ONE AGAIN SIR....💕
Awsm......
Bhai how came you ask this doubt? Did you speed post or something like else
Keep it up Kid. Well done.
The doubt was indeed a good one for any science enthusiast and I'll applaud you for this , this things came in every single sci. Loving boy ;))
You are a curious brain, just keep thinking in this way, u have a scientific mind
Maan u r a great teacher .
The curiosity inside u for giving knowledge is something!!
Full respect sir!!!
Thank you sir.This was very useful.Respect from sri lanka 🇱🇰
The fact that he didnt change even a single word of his legendary book from past so many years is astonishing. His books are just so accurate.
God is that you ??😱
I will be sure to tell all of my friends about this channel 😘
To understand refraction of light ICSE 2020-21 of class 10
m.th-cam.com/play/PLpzWoho73qlLxP-6B-XNaa3aYXXiLxUN3.html
I have seen on many internet platforms they have mentioned that snell's law is not valid for normal incidence. Even in the schools teachers use to teach that snell's law is not valid. From past three years I am regularly teaching and telling students that don't go with the misconceptions. Snell's law is valid in every condition but students Aaj line on some websites which are no authentic information. Thanks to HC VERMA SIR
And I wrote my own theory and it appears to be correct
And the whole india is still have that IAS/IIT fever
Kisi ko na padhne ka hai na smjhne ka hai sbko bs iit me jana hai aur 9 to 5 karna hai 🥱 Hats off to you public
Hc verma sir ❣️ the greatest of all time ⚡
I have got nothing to do with this topic but still I m watching just because I love watching his teachings......
💞💞💮💮
Same question was eating my mind,now I am satisfied with the answer.
The Symmetry concept explained here is really interesting and important. The Symmetry around the normal to interface between medium plays an important role in optical refraction. It is not something associated with light rather with the distribution of internal constituent of material through which light is passing during its refraction....
Thank you Sir, you are one of best science teacher and popularizer of our country.
The speed of light is changing in denser medium. When ray of light falls normally on the interface, then it does not bend. It means that the time period is not constant and will take longer time to pass because of less speed of light,but time period is always constant. How is this possible? Please answer this in this way not in sin i / sin r = 0
hope you will ans to my doubt
@@KavitaYadav-ul8fb Time period and frequency of a wave (the interrelation f=1/T) depends upon source frequency and due this reason unless the repeatability or periodicity of source is affected, medium is not going to affect both frequency and time period. The velocity of light varies on passing from one medium to another medium because of the variation in wavelength. C = frequency1× wavelength 1 in vacuum. When it gets into another medium C changes to let V. Then V = frequency 1× wavelength 2. The variation in the wavelength (the spatial gap between two repetitions) is the reason behind changing of velocity. Again the bending of light for case oblique incidence is beautifully explained in Electromagnetic theory. See Fresnels theory of refraction and reflection in EMT.
Sir you are one of the best physists .....of the world.....
Best explanation to this problem....
I argued my science teacher regarding this topic for a whole period of 45 mins. He was saying that no refraction occurs when light incident normally to the surface but I was not satisfied because whatever the angle is... Change in velocity, wavelength, amplitude still occurs. So why not to call it refraction?? Because of only unchanged direction?? Definitely not. Because as sir mentioned here... Bending is sign of refraction but not itself refraction. I 100% convinced my teacher with my points to accept this as refraction. Thank u for he video sir... Big fan👍
Omg it happened with me too but my teacher did not agreed
in text books, these days, it is clearly written that the change in speed of light ..... is called refraction. In refraction, bending of path happens except for normal incidence. Then, why do the teachers stress on Bending...
One word : Genius
Same question came in my mind
Thatswhy i was searching a good explanation and i found this clip
Thanks for giving clear concept
👍
I also had the same doubt
Thank you so much sir ❤️
I had the same confusion but now it is crystal clear thanks a lot sir ❤️❤️❤️
Beautiful explanation
Thanku sir . You are a real physician
you meant physicist?? lol
Mind blowing sir
Shivam saurav u r too good yaar.... Thnkzz fr asking sch a good question
Wow amazing questions 👍👍🙏🚩🚩🚩
इलेक्ट्रान किस कारण से किसी चालक में एक स्थान से दूसरे स्थान पर जाते हैं? वह बल जिसे विभव कहा जाता है यानी वोल्टेज- वह पैदा कहाँ से होता है? क्या फोटानों से !
Voltage is created from potential difference between two charged particles,if you have a positive pole and there are two electrons near it the closer electron will face more force and will have more potential than other,this difference in the potential is called potential difference.this difference is needed to create flow of electron.
Ohh till now I thought that mathematics and physics failed at this point but he proved it right so 😂😂😂😂😂😂😂😂😂.
Sir you are a genius ❤❤❤❤❤
वोल्टेज क्या है सर कृपया इस पर कोई वैज्ञानिक दृष्टिकोण वाला वीडियो बनाए !
Voltage can be easily defined as it is a ability battery to charge electrons for example electron round in conductor and get discharge than again they came in battery and battery will charge this electron that is know as volt and it is the unit of potential diffence
Nice question and solution
Light is a sine wave having plus and minus electric monopoles. Moment is necessary for bending, which requires force and moment arm. Inclined light beam has a downward component of electric field which produces downward force due to attraction between opposing electric monopoles and moment arm, as a result light beam rotates towards normal in denser medium like clock pendulum. In normal incident light beam there is no downward component of electric field or downward force. Also there is no moment arm the light beam therefore travels straight through denser medium without bending.
Thanks sir.. You are the best.
Sir you are my role modern and I am also from Bihar.
No doubt sir is authority of physics
Sir
Upload a video on Schrodinger equation derivations
Sir. Thermodynamics k entropy ki video upload kijiye..
I am a big fan of yours and I love science
Sir ,please make a lecture on diffraction of light.
Thank you sir , It is also my doubt .
Sir you said, for normal incidence(0°) also snell's law is valid as asked in the doubt also, but in the book it is given snell's law is valid only of angle i is between 0 and 90. Internet showing varied answers, can you please tell?
Great .....
Nice explanations sir ..
Wow man such a great question.....
Thank uh sir🙏 it is very useful
Sir , When we talk about optically rarer or denser medium .... What it actually is ? Can you please explain it......
Sir please make a video on expression of drift velocity as many say the expression given in your book is incorrect
Nive explanation sir❤️❤️
I also had the same doubt and wanted to ask it to someone... Now I got it. How can I ask other doubts to you sir ?
The great sir....
Well explained
Love you sir....
Sir I'm student of class 10 2022-2023 and I'm CONFUSED because in our NCERT
The second law of refraction says
The ratio of sine of angle of incidence to the sine of angle of refraction is a constant for the light of given colour and for the given pair of media
This law is also known as snell's law of refraction
**And SNELL'S LAW SAY THAT THIS IS TRUE THAT ANGLE OF INCIDENCE NEVER BE EQUAL OR PERPENDICULAR TO 90°
( 0
Love you sir, you are a gem🎉🎉🎉
Thank you so much sir ❤️
Me too also same question came in my mind and i was searching answer and I got this now I got it😃😃😊
Sir what would be speed of sound in neutron star
Sir, why electron move from cathode to anode in electrolite solution (battery machinisim)??
Hey!
As we know that electrons are negatively charged ions and cathode is also a negatively electrode which means it is made of negatively charged electrons.
And anode is positively charged. We know that electrons (negatively charged ions move from negative to positive electrodes) that is they move from negatively charged cathode to positively charged anode
Hope you'll get it.
If still there's a question, you can ask me out
Thank you!
Regards Urvashi :)
Does the depth of tank with water change or remain same when viewed normally?
Thanks so much sir
The only teacher who cleared me this question thank u very much sir 🙏
Thank you so much sir😇😇🤩😌😊
Sir ham light ka refraction , reflection law prove Krneka samaihi to +or- sign la late hai lekin mathemetical problem solve Karne ka Samai fir se sign Kiu Lena parta hain....??
Sir agar medium 1 se medium 2 ki or light straight line perpendicular me aaye to kya hoga..
Love u sir😍😍😍
Is force required to move a electron increases by increasing its mass?if yes then why?
Sir I want ti learn from you but I don't know how pls tell me.
At normal incidence light does not bend. H C Verma explains why it is still refraction.
Sir how one can say light is an electromagnetic wave? what is the theoretical or experimental proof?
Somebody tell me how can I ask to sir
Sir please answer how can we send you questions to clear doubts that have been for ages🙏?
Sir we can change the velocity of lights
Sir it is possible to give lift to rocket with the help of solar power
Sir ,why does the light not deviate when passed through optical centre of a lens
Abhay Pratap Singh
It does deviate, but as the lens which is used is so thin , that the deviation is negligible, so even in textbooks it is written that we use thin lenses, after all we imagine the centre as glass slab, and deviation in glass slab is directly proportional to thickness of slab
Sir if we are somewhere in the vaccum, every thing is blacked out , then we see a beam of light from one end to another then how can we it is moving
Thanks sir
U r my favourite teacher sir..
Thinking causally if we are travelling in a bus and suddenly brakes are applied than a wave in contact to the floor of the bus is being generated and supposing the friction acts opposite to the wave generated if we can manage to equal the magnitudes of both the generated waves then no person will get a forward push in the bus.Sir can this be possible?
The greatest
Sir please describe the parallel plate capacitor concept and working
Sir....... I would very much recommend a playlist for topics on physics...... Where you teach every basic topic in accordance with the syllabus, so that we have a uniform studying structure. And have a QnA ( question and answer) session for the topic that you have taught in the previous video.
Hope you see this comment...... Thank you very much sir.... Wish you great health!!!
To understand refraction of light ICSE 2020-21 of class 10
m.th-cam.com/play/PLpzWoho73qlLxP-6B-XNaa3aYXXiLxUN3.html
I agree with you!
😃😃😃😃😃😃😃😃😃😃😃😃😃😃😃😃😃😃😃
Hello sir i am confuse that potential difference 8a directly proportional to current or current is directly proportional to potential difference
Sir when a light ray travel from denser medium to rarer medium why should it bend away from the normal aur when it travels from rarer to denser medium why should it bend towards the normal
Thank you 😊sir
Hello Sir.Can you upload a video on AC Inductance Circuits
Sir i am suryaksh student of class 10 sir i want to ask that if 2 stars in the universe are having the same gravity and they may lie nearer to each other ( hopefully this doesn’t make much sense) but still the lie they what will happen if collsion occurs than tell me that what makes the collision to occur
Sir. Though sin I divided by sin r is not determinant but v1 divided by V2 is determinant how in the case
sir if in dielectric Electric field in capacitor = Enot /k so Capcitance becomes k Cnot and P.D becomes Vnot/k
but Electrostatic Energy of capacitor having dielectric=1/2CV^2 d does not becomes
1/2k Cnot ( Vnot/k)^2= initial energy/k
though it becomes 1/2k ebslen E^2 which is equals to k initial energy
so why not above condition satisfies.??
Sir I have one question to you that when light Re obliquely goes too rare to denser it bends but when light goes perpendicular why does not bend what is the reason behind please kindly help me and my name is Saurav kumar from class 10
Parnam sir.
Sir, in following velocity in media 1/ velocity in media 2 (v1/v2) is equals to 1/u(mew).. Hence, it can be observed by refractive index is inversly proportional to velocity in media
Sir plz tell the reason why the ray passing through normal remains undeviated during refraction
Sir aapki book ''concepts of physics '' me drift velocity ka Jo formula hai vo galat hai....kyuki hamm single electron ki nhi multiple electron ki average velocity lete hai matlb Sahi equation hoga (V=eEt/m).wo V=eEt/2m single particle ke liye aayega . Sir mujhe 1 bar confirm kr dijiye comment krke
Hlo sr
Sr plz answer my doubt
How can we make refractive index of two medium same ? Does by doing so things are going to be invisible ?
Hello sir!
Sir I've a request. Can you please make videos for the basic concepts of the physics of class 10. Like concepts that will give us a clarity well enough to solve any problem.
It would be a privilege to clear my fundamentals from you sir.
Thank you:)
th-cam.com/video/ujAMoTmqDdc/w-d-xo.html
Sir please tell me that does water reflect or refract light????????
Respected sir....if you upload all lecture of CONCEPT OF PHYSICS with questions and explanation then all market of education system of India will close ....but it's beneficial for weaker sections of society .....sir please do these.....for your satisfaction of your country......
pawan Kumar To understand refraction of light ICSE 2020-21 of class 10
m.th-cam.com/play/PLpzWoho73qlLxP-6B-XNaa3aYXXiLxUN3.html
Education chahiye free mein aur engineer banke lakho kamoyege waah re hypocrisy.
Education agar free mein loge to engineer banne ke baad salary mat lena ya us salary ko daan kardena bolo hai himmat
awesome
22july ko pahli baar apko real me dekha. iitk pg y19 batch
Sir but then if we will use 2nd Formula i.e. v1/v2 then we will get different answer in comparison with sin i/ sin r... But it must be same na?
How can we see in uv radiation if it is out of visible spectrum
Sir I prepare IIT exam but my physics is few weak how will I do