Photoelectric effect demo

Demo using a simple electroscope and a UVC Lamp. Baed on Hallwachs Experiment of the year 1888

[@TheAniketKedia]

Absolute Legend he never stops learning and teaching

[@nirvlogswithfun]

kzbin.info/www/bejne/hX6aanupe5J0ldE

[@hcverma2928]

So nice. Thanks.

[@vineetasingh145]

@@modulus2360 because......force on ground is (mg+rate of change of momentum) Momentum of those two bodies will depend on their velocities at time of hitting which is different if they are released from different heights

[@Satchidananda005]

@@modulus2360 tm pehle sahi se btao ki kya puchna chahte questions me

[@nikkhilvlogs]

@@modulus2360 ask this to ur school teacher this question is not the standard of HC SIR

[@amardeepjhala6922]

I develop the natural sense of curiosity by looking at sir's excitement and curiosity.

[@hcverma2928]

So nice. Thanks.

[@rajasthani2.02]

kzbin.info/www/bejne/bqaTm5mNrad7prc

[@rajasthani2.02]

Help friends for Indian army and poor families

[@rajasthani2.02]

50% earning of this channel donate

[@RohitKumar-ey4op]

@@hcverma2928 Can we increase the velocity of moving charge by any external force such as magnetic field

[@singerbest6256]

See how he is passionate about his work, It shows age , immunity , white hairs and wrinkled hands can not take over your passion. ❣️❣️

[@Subhrajyoti]

yeah we all want people like him

[@singerbest6256]

@@Subhrajyoti Yess Bro... Love And Respect for Shre HC VERMA SIR❣️🙏

[@dipeshgoel730]

TRUE ✅✅✅✅✅✅✅✅ THANK YOU RESPECTED HC VERMA SIR FOR YOUR DEMOs 🙏🏻🙏🏻

[@rajasthani2.02]

Student help me

[@rajasthani2.02]

kzbin.info/www/bejne/bqaTm5mNrad7prc

[@theanonymous4443]

Sir, a while ago I was studying photoelectric effect and now you have uploaded a practical video on it. I am really happy. Thank you sir...

[@hcverma2928]

So nice of you

[@walnut9472]

I was yesterday

[@amanhehu]

Guru Bio hai Mjje waali !!

[@royalnill6724]

I am now...

[@devankoberoi5546]

@@hcverma2928 Good morning Respected HC verma sir. Sir i wanted to ask you a doubt that in case we do YDSE experiment using white light,red colour will be obtained near the central maxima according to me, but you have written that Violet will be obtained in your objective 2 question 9 of chapter light waves sir Me and my teacher have the same doubt. Kindly do reply sir!My teacher is a big fan of you. Lots of love. i have even mailed you respected sir the same,because even ncert book writes that red colour will be obtained near central maxima but you write violet..Please clear this confusion

[@baibhabchakraborty]

This shows he is not only a proffesor or writer of Physics, rather he feels the Subject. Absolute Legend

[@parthvarasani495]

UV light strikes the electrons of top of the surface foil of tumbler and it produce +ve potential hence , inside electrons attract towards +ve potential and it will collapse quickly then before.

[@kumarjsam6290]

Thank God Sir, you explained it🙏

[@parthvarasani495]

@UCDfxijvHxXyW0ZgsZ4LKlAw lots of examples ,like it is use as detector of photos, based in this principle we cam make photo sensors that counts product like in airline your luggage counter etc. This is a prototype actual devices made up of semiconductors.

[@RADIATION_BLUE]

Just studied photoelectric effect..threshold frequency...work function...amazing sir 👍🤩

[@PhysicsMinutes]

Sir, when you speek, science becomes so cool and easy...thank you so much sir, you will always be in our heart. Being a young lecturer, learning a lot from you 🙏.

[@hcverma2928]

So nice of you. Thanks.

[@ashokchakraborty5027]

This legend has taught us how physics can be an interesting subject... Lots of respect to u Sir...

[@Randomotaku58]

your voice is so relaxing sir and it's very nice of you to clear doubts of students everytime. when i ask those kind of doubts in school, teachers just say "don't go in deep, just memorise".

[@amaychandravanshi]

Thanks for the experiment! I really wanted to see it done in real life as I had studied about it a few months back!

[@Shatrughan_Obray]

I haven't learned physics well ways last year because of Covid-19 but I watched many lectures of Verma Sir,I learned a lot from Sir's videos which are on KZbin.

[@sanah3143]

Sir I am from kerela I love physics but some how I feel some part a bit confusing due to some misconception upon my base... But when I seen ur lecture on angular frequency and angular velocity.. which was somepart irritating for me... I found small small insight of u to make the lecture easy and cleared my doubt which has been uncleared by my phy faculties❤️❤️

[@rajasreesnair3302]

Just studied it in Electric charges and fields at standard 12th, This demonstration made it more crystal clear. Thanks sir for this awesome Demo.

[@harchan6274]

Sir u really made physics interesting, u never stopped and always teaching students to make them understand concepts better

[@rishikeshdeore8981]

Hc varma sir can't live without physics 😀

[@ligmaballs100]

Well, nobody can

[@saketyadav2240]

I studied it in chemistry few days ago and sir's video made it beautiful! And easy to understand! THANK YOU SO MUCH SIR!! 😍😍

[@vaishnavirai4186]

You've always been so amazing Sir. Thank you so much ! 🙏🌼

[@hcverma2928]

Thank you.

[@devankoberoi5546]

@@hcverma2928 Good morning Respected HC verma sir. Sir i wanted to ask you a doubt that in case we do YDSE experiment using white light,red colour will be obtained near the central maxima according to me, but you have written that Violet will be obtained in your objective 2 question 9 of chapter light waves sir Me and my teacher have the same doubt. Kindly do reply sir!My teacher is a big fan of you. Lots of love. i have even mailed you respected sir the same,because even ncert book writes that red colour will be obtained near central maxima but you write violet..Please clear this confusion

[@devankoberoi5546]

@@hcverma2928 Sir i would also love to join you personally for doubts and sessions you conduct please

[@_Anmol-oh4iu]

Reading this experiment theoretically since 2 years. Today Atlast got practical visual thank you HC Verma sirji

[@niladrisanyal1689]

Can u explain pls hv=hvo + kemax how did he showed this

[@etworld2020]

Physics is a real feeling in our daily life . which I also get from your book sir and today this animation fullfill clear concept..❤️

[@darkstromx1465]

My concept of physics is arriving 2 days later very excited to learn from it

[@priyanshrawat442]

U are in 11th?

[@devanshsharma5459]

Yes

[@aGenericBanana]

Just solve questions by seeing them online. Why waste money.

[@devanshsharma5459]

@@aGenericBanana unke pas hai to tujhe kya problem ho rahi hai

[@AKTHECREATOR]

@@aGenericBanana bhai book se solve karne me alag feel aata hai

[@newtonlovephysics]

Creativity at its best.. A creator who thinks beyond boundaries ... Sir utilises simple things from every nook to develop conceptual understanding in Physics by displaying n depicting concepts in a simpler form. He is extraordinarily talented, genius nd visionary. Pleasure to have you sir in India

[@adityabandawar4573]

The legend like HC verma whose books are being used by millions of people have only 500k can't we give him little bit of support so that he may feel proud

[@tanvirfarhan5585]

nope because we like gaming and funny videos not knowledge. that's why India is not growing in innovation

[@dipayandasgupta7506]

Sir amazing demonstration... This made the concept clearer for me too... Thank you sir.... On a sidenote I do your 2 volumes of concepts of physics religiously They are very helpful books.

[@hcverma2928]

So nice of you. Thanks.

[@shivanshukumar4209]

What an amazing coincidence! Recently studied photoelectric effect and saw it practically!

[@theepicfailguy127]

Me too

[@meetduby9351]

11 acche se padhna!!

[@swamivivekanandanglovidhyalaya]

Me also😅😅

[@hcverma2928]

Great.

[@piyushsingh4933]

Sir, I am in class 10. I really love your books. From grade seven, I started to read My sister's book of physics (of your name, H.C Verma). Though I didn't understood it much, I enjoyed turning pages and reading some of them (mostly with diagrams 😅). My curosity for physics generated from there.

[@AnuragKumar-uk3eg]

Real thing you will face in concepts of physics in volume 1 & 2.

[@walnut9472]

Wow YT is so intelligent Yesterday Photoelectric effect was taught in Coaching and Today it got Recommended to me 🌟🌟

[@grimreaperstudioss.m9009]

An absolute legend...if there ever was a Nobel prize for teaching it would go to this personality..

[@a.karora136]

I have no words sirr bcz you are my guru that never stops to teach their students..🙏

[@hcverma2928]

So nice of you. Thanks.

[@Gagan_Saggu]

That remind me a line from my 5th class SSt book, सीवी रमन ने मात्र 200 रुपए के उपकरण से रमन प्रभाव की खोज की।

[@sikshasanjog2974]

Very good comment👍

[@ramanathanreddy2047]

It's really amazing.... Because yesterday I studied photoelectric effect and yesterday my order for HC Verma Vol. 1 had arrived and today surprisingly in my KZbin section I got this.... Really great.... Padma Shree HC Verma is a living legend.... I am greatful to God that he has given such precious gems to this earth 🙏.... And for me my god is my teacher who is Padma Shree HC Verma🙏🙏....

[@ArvindYadav-fq4su]

Photoelectric effect, phenomenon in which electrically charged particles are released from or within a material when it absorbs electromagnetic radiation. The effect is often defined as the ejection of electrons from a metal plate when light falls on it.

[@nirmala565]

The instrument sir used is called electroscope...which is used to identify any object wheather it is charged or not....the foils inside the glass are thin gold or silver foils, they are only used because they are very good conductors...

[@anurag_vishwakarma_poetry]

Theory + proper demonstration = Best understanding

[@tushardey7653]

Sir you always provide us the simplicity of science.....thanks a lot

[@bibhubhusanswain1707]

Good morning sir, Your book on Quantum Physics is really basic to start for anyone. The way you described nature with mathematics is understood easily. Thank you very much for your work for us. You live with a healthy life.

[@missanonymous225]

Where it is available ???

[@bibhubhusanswain1707]

@@missanonymous225 Flipkart

[@oye_dramatic]

Thank You Sir...till now I was studying from your book ...today I got the opportunity to study from you Stay Blessed Sir

[@suyogyakumar1676]

Sir thank you for showing the practical demo of photoelectric effect, it got easy for any one to understand the things practically rather than reading theory, especially when the teacher like you teaches this things

[@Bluff_Body]

Absolutely amazing, thank you sir

[@hcverma2928]

You are very welcome

[@vaibhavjaiswal1063]

Sir your each and every experiment is fabulous

[@parimalaangara5311]

Sir sir sir You are legend in physics. We entire family fans and followers. Great teacher you are..

[@Bangalirghor]

Sir next Sunday , I shall join your class... And so I was learning this photoelectric effect. When I saw that you uploaded a video on this topic , I was really fascinated. Sir really you are great.

[@asteriasgaming9062]

Thanks to you sir and many other teachers in India that knowledge is not being limited to just textbooks and we students are actually using our reasoning to explain the phenomenons.......thank you sir for many other videos which helped clear out my concepts.....

[@adityanithariya]

Sir, why due to UV Light it discharges more quickly than without it?

[@nikhilsharma-lo6yx]

Dear Sir.... I took JEE in 2005... The absolute mecca for Physics was H.C.Verma Vol.1 and Vol.2. I couldn't crack the exam back then, but it's great to learn from you here on KZbin. Thanks for being a great teacher and enlightening the world with your knowledge.

[@frenzygamer7229]

With uv take less charge because uv is electromagnetic wave as it has electric field apply force downward on charge leaf so it take less time ⌚ Remember coming close with oscillation Or not uniform as field oscillate Hope aswrr the question

[@shreyanandanwar968]

Great sir 🙏... Hope we all learn much more from you ☺️

[@Aditya.Pandey.]

Thats it......We expect these types of videos from this channel.....❤

[@anmolgupta-bj5ce]

Beautiful explaination of photoelectric effect sir🔥🔥🙏

[@shreyaskarthik2185]

So the author of arguably the best physics textbooks has a yt channel ........ Awesome

[@niteshthakur3213]

THANKYOU SIR @HCVERMA Photoelectric emission is the phenomena by which a good number of substances, chiefly metals, emit electrons under the influence of radiation such as γ rays, X-rays, ultraviolet and even visible light. This effect was discovered by Heinrich Hertz in 1887 while working with resonance electrical circuits. A year later, Hallwachs, Elster and Geitel investigated the phenomenon with a simple experimental arrangement. In the absence of any radiation, the discharging takes place slowly whereas when there is radiation falling on it, the discharging takes place early. These experiments also study the relationship between photoelectric current, the intensity of incident radiation, velocity and the kinetic energy of the photoelectrons, and their dependence on the wavelength of incident radiation used.

[@Prinkarajput765]

Aisa kabhi nhi socha th photoelectric k respect mei very informative and precious information for me❤️

[@visheshakeenlearner]

Wow sir your experiment took me to the science lab at home thanks a lot for sharing your knowledge through the books and the practical experiments as well😀😀

[@shantanubhosle3217]

A very thank you to HC VERMA sir for trying to take concepts of modern physics beyond theories by performing experiments

[@abhinavsood1194]

Legends have room temperature as their room temperature 🌡️😂

[@ritikatandon5656]

With UV( high frequency and high energy) ... Photons with energy strike the metal surface and electrons fall out and thus causing the discharge Thankyou so much sir

[@rinadevi110]

Greatest teacher born in this planet🌍 🙏

[@mihir549]

I, DON'T HAVE WORD'S FOR THIS PERSON!!! HE IS BEST

[@AJAY-wd6nl]

U r down to earth sir

[@nithin1729s]

Yeah others are levitating above earth...

[@hcverma2928]

So nice. Thanks.

[@endeavourer1073]

@@nithin1729s so nice.thanks.

[@devankoberoi5546]

@@hcverma2928 Good morning Respected HC verma sir. Sir i wanted to ask you a doubt that in case we do YDSE experiment using white light,red colour will be obtained near the central maxima according to me, but you have written that Violet will be obtained in your objective 2 question 9 of chapter light waves sir Me and my teacher have the same doubt. Kindly do reply sir!My teacher is a big fan of you. Lots of love. i have even mailed you respected sir the same,because even ncert book writes that red colour will be obtained near central maxima but you write violet..Please clear this confusion

[@deivarasanarun6185]

My name is Arun , living in Anaimalai, Tamil Nadu. I am studying at Nachiar Vidyalayam. Sir please come and visit Tamil nadu in future . And give a lecture on physics topics . Love from Tamil Nadu. I am glad to see your love for physics everywhere.💛💛

[@aekum11]

Sir I used to score bad. Scoring bad was not a problem lack of understanding was and Sir not going to lie u helped me a lot i was so motivated by u and started understanding at first i did not get results immediately but gradually i became better and now im confident. Sir agar aapse kabhi mulaaqat hui to aapko meri taraf se thekue ki party doonga.

[@iplt20cr89]

This is gold leaf *electroscope* experiment .find to same or opposite charge , when sir rubbing plastic bottal than bottle created *negative* charge on its. Due to negative charge this leaf are repeal each .

[@KumarAnand099]

Nice experiment 👍 👉 Photo Electric effect is my favorite topic of Modern Physics .

[@RahulShubhangi]

In his earlier videos I used to think that why is he explaining the same thing so many times.. Like here also he showed charging and discharging almost ten times.. Now I understood why.. Not every student has same learning ability.. Some understand in one go.. Some in two but some in ten as well.. And a great teacher never let his weakest students down...

[@hcverma2928]

Very nice.

[@abhickkumar5195]

For the love of physics i am here thank you sir

[@architchhajed1900]

Great demonstration sir!

[@ROCKY_T]

Great video sir Huge respects to you You are a legend.

[@rimidey4588]

I understand one thing through your teaching sir...that...there is only the way to success is to understand the core concept....🙏🙏🙏🙏🙏

[@hcverma2928]

Yes, you are right

[@ojas-jjo7075]

Thank you sir.. you are my role model

[@hellsowner8513]

Just when I needed this ! Thank you so much sir !!

[@chinmayeelenka9589]

This happens only when you have interest and getting fun by doing this which makes him a great teacher in physics. As in our school our teachers are not dedicated like this as they choose teaching as a profession not passion so that's why they can't teach upto this level 🙏🙏🙏🙏🙏🙏🙏🙏

[@nikitbarapatre]

It's amazing to see physics in real life.

[@vivekvarma6863]

Wow sir . it was good explaining eg to know the photoelectric effect .Thank You Sir !😲🙏😍

[@hcverma2928]

My pleasure

[@spaceandtimescience6080]

YOU ARE MY INSPIRATION SIR I WILL NEVER FORGET YOU IN MY LIFE

[@VinodKumar-rz6fg]

Mind blowing experiment sir....But I had a doubt on this why the charged particle came fast by keeping UV sir please say sir...

[@srinivasarao7153]

God of physics who made our learning effective and simpler

[@roshansingh1623]

Practical knowledge is very important , thanks sir

[@rameshsr3375]

Sir You are my inspiration sir.... Please bless me sir🙏🙏🙏

[@soumenmishra4109]

Sir you are a legend of physics ........Thank you sir

[@MaybeSomeone7483]

Sir you are living legend salute you sir 👍👍👍👍

[@haweliparswagathai4051]

बहुत बढ़िया सर शुक्रिया💚💙

[@iqbal-iq]

Sir you are a legend from India God bless you

[@itssandeepchaudhary]

Sir mazzza aa gya aise hi experimental demonstration ke aur bhi videos daliye. Kiuki aap to jante hi hai aajkal colleges me kya ho rha hai bs syllabus rutt jao aur topper ban jao. Btw Sir I belongs to you birth place, LOVE 💘💕💖💗❤💓💘FROM MUZAFFARPUR (BIHAR)

[@hemant4068]

Sir plzzz increase the frequency of uploading videos JUST NEEDED MUCH VIDEOS OF PHYSICS PLZZZ SIR ALWAYS AMAZING AS BEFORE ❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣

[@kashishgaur6071]

wah saltue to you HC sir for making this concept as simple as possible

[@beastboy7327]

Legend of physics From simple things photoelectric effect explain

[@gautamghoshofficially1159]

Thanks sir for the explanation🙏

[@divyanshsingh1746]

Sir does it is also known as gold leaf experiment?

[@radiationtechnology5552]

Pocket dosimetre also works in the same manner ... If we take xenon gas at low pressure in the glass . When radiation enter in the glass ionisation take place and chargers produce . These charges discharge the aluminium stip and consequences of this stip comes close . How much degree the aluminium strip comes closer indicates radiation quantity. Thank you sir .

[@aadisingh526]

Exceptional sir! Thank you for insight 🙏🏻🙏🏻🙏🏻🙏🏻

[@ayanbhadra1217]

The experiments are made us hungry to know about anything. Sir please give some experiments of Nature which we can do in our house🙏

[@teslainstt.4630]

Kayastha samaaj ki shaan ! Bihar ki shaan !!! Bharat ki shaan hain ye sir !!!

[@vishalbindal5066]

Ab tak bas books mai hi padha tha aaj experience bhi kar liya credit to our hcv sir

[@raodhrumilgirish3843]

Thanks sir for this demonstration...I am studying in 12th so it helped me a lot in practically understanding the topic👍😊

[@bipul5504]

Namste sir ji Mera NAME Bipul yadav hain main class 11th me abhi gaya hu sayad CBSE board me main bhi sir APKI TARAH BANANA CAHTA HU APKE BOOK KA CONCEPT BAHUT HI ACCHA HAIN BILKUL APKI TARAH

[@hcverma2928]

So nice. Thanks.

[@lalitsain6647]

Big fan sir i m also a physics lec. Your experiment is very helpful

[@Ramprasad-qn1vr]

You are doing great work sir

[@AmanSingh-rb6op]

Sir ❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️ aapko thanks likne ki koi jarurat nhi ❤️

[@sawanghosh5756]

The thin plates have both positive charges on them, hence are repulsing each other. After uv comes on the aluminium cover above, the photoelectrons are emitted from it and neutralise the positive charged plates. 😐

[@dhruvbaghel466]

Why positively charged?? The plastic bottle is negatively charged and hence by induction the foils are too negatively charged..if the uv light illuminated on the foil the rate of discharging of the foil is more and the negative charge decrease due to photo current..

[@hcverma2928]

Foils are negatively charged. But for that the bottle should be positively charged.

[@dhruvbaghel466]

@@hcverma2928 sir may be i made a mistake there. I was too confused about the charges appear on the bottle but I've verified (google) whether on rubbing plastic,it gains electron or positive charge.. The answers thier were plastic gains electron on rubbing over a cloth.. Edit: I've once again thought about the mechanism of Charging of electroscope by induction and now I'm clear sir thank you.. the plastic bottle must be positive charge and hence due to induction, negative charge appears on the top. Your finger provide a path for electrons to neutralize the positive charge (present on foil). Now after removing the plastic bottle the overall net charge is negative on the electroscope.!! Sorry sir, i imagined charging by conduction initially..

[@ravinderbindra530]

@@hcverma2928 Sir After Rubbing the bottle If it is positively charged wouldnt it will attract the free electrons from two foils and foils will become positively charged

[@dhruvbaghel466]

@@ravinderbindra530 that's where the role of touching come for..

[@gurujicoder]

Just loved the way to teach sir