Grade 12 Physics | Photoelectric effect| Full lesson
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- Опубликовано: 28 авг 2024
- Optical phenomena and material properties
In this lesson you will learn the necessary theory on the Photoelectric effect:
- the duality of light
- the wave nature and the particle nature of light
- what is a photon
- how to calculate the Energy of a photon
- how to calculate the work function of a metal
- what is the threshold frequency
- how does intensity affect the Photo-current
All of this compressed into one lesson.
Finally I also tackle one past-exam question from SC/NSC 2019 Exam
Enjoy!!!
Just Went From Level 1 In Physical Science To Level 3 In First Term And From Level 3 To 5 In Second Term And Aiming For 7 In My Examination
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I watched this in 1.5x speed and understood in 30 minutes 😭 you explained in 30 minutes what my teacher couldn’t in 3 hrs.
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Thank you so much. Please do appreciate your teacher's efforts as well. S/he is doing their best under the circumstance...
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I went from level 3 to level 6.
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It’s my pleasure. You’re most welcome
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Askies... Now that you have discovered this gold mine, do share it with others. All the best for your exams
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this section does not require that much work and energy tbh, you are saving us from 100 pages of textbooks just to grasp these basics you covered in less than an hour
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It's my pleasure... You are welcome.
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Interesting chapter I love it. One of the chapters I really need to focus on and do research on when I will be doing my master's degree. I relate to the energy of the photon as the force applied and work function as the static friction of the object. In order for a person to move/accelerate an object, the person must overcome the static friction of the object. And so in this case the energy of the photon which is force applied must be greater than the work function for the electrons to be emitted.
Excellent sir... It is exactly the same thinking.
Jeez Brue,what an explanation,big it up by the way and good luck on your masters
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You’re welcome
Good day, Sir....I'd like to start by applauding you for all your phenomenal physical science videos and teaching techniques, they really do come in handy and are much appreciated....But I have a request for you to please dig further on the photoelectric effect and perhaps do a video on the emission and absorption spectrum as I have a problem understanding the concept....Looking forward to your response Sir
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What mark you got in Final exam?
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You're most welcome... Please feel free to use this channel as a resource whenever you need to. Don't forget to subscribe 😊
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thank you so much i now understand the photo electric effect much better now 😊😊😊😊
It’s my pleasure
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Just preparing for my exam tomorrow
Anybody else trying to save their grades before it's too late. Dankie malume
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You’re welcome
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Be sure to check out the one after it.
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Educative and easy to understand
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You’re most welcome 🤗
According toI=Q/t
since charge increases, current increases, how is time affected? If i were to use the equation to explain.
however in an equation, there should be a variable that increases, decreases and a constant one. BUT its not so with this equation. Please clarrify this.
Well, if it takes a lesser amount of time for the same amount of current to pass, then current has increased.
this is so helpful thank you so much sir😭❤❤but sir can you make a lesson on the emission and absorption spectra
I will do so… 😊
You helped me a lot❤️
You’re welcome
Legendary
My pleasure
Is it important for us to know or study about cut-off wavelength?
Well, frequency and wavelength are related. It's worth knowing that relationship and being able how to apply it in the context of a question.
Thank you so much sir.
You're welcome
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You’re most welcome
Hi sir.pls some videos in preparation for physics this Friday. Thank u
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The most important thing to note 😊
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Thank you
"Not that kind of weed"...
Lol.
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Danko!!!
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❤️🔥❤️🔥❤️🔥thank you sir !
My pleasure... Let's keep working
Hi sir, is work function the same as threshold frequency?
No, but they are related... Work function is the minimum energy required whereas threshold frequency required.
Thank you👐✌
Awesome!!!
Decrease in intensity results in decrease of emission electrons and kinetic energy what happens to it?
does kinetic energy also stay the same?
@@hlumisanamba9095 Kinetic energy stays constant 😊
Thank you🥰
You are most welcome
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You're welcome 😊
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You're welcome
If ure given v..how do u know whether it's vrms or vmsx?
You will be told
Thank you sir
You’re welcome
class of 2023 to us that got 2hrs left and watching this video in 1.5 speed
2x speed right now is dope
I wonder how goofy I sound 😂
Sir for the last question 10.4 , will the same happen for voltage?
Yes
Hi sir can you do the kzn 2022 September physics paper 1 electrostatic and circuit question...really got stomped by it during exams
Please send me that question paper