Curved surface refraction formula | Class 12 (India) | Physics | Khan Academy

[@wintersmischief7439]

Truth to be told ,this explanation is so much easier than how it was explained in class.

[@dr.meghnasharma7389]

You made it so easier for me to understand .Thanks !

[@adityarawat_]

Yes 4 saal baad bhi 🙃

[@padamarambabu3888]

Your explanations was so amazing and it helped me a lot to study easier and I hope u make many more videos like this

[@falconions3945]

this is sooo easier than any other thing a saw thank you soo much !

[@anishatadkod1778]

This person makes thing's so easy !
Thank you sir

[@risunangobeni4345]

amazing video. watching all the way from RSA. thank you sir. helped a lot!

[@shreyakulkarni9240]

you are my fav!! u explain with such simplicity (n voice modulation, lol) its the BESTTT

[@mahimachowdary1322]

Sir ur teaching is awesome
Could do the derivation after hearing it once 🍾🍾 thank you ❤

[@ruthasagi8628]

Amazing explanation. Thanks a lot😀

[@narayanashyamala9324]

Superb bro 👌👍 I have become your fan

[@srikrishnarr6553]

simply superb!!

[@Abdullah_786-x3s]

Nice. Boht mast tareeke se samjhaya

[@ashokparashar8464]

i am seriously your great fan...........thankxxxxx

[@RajendraRaut-ds1pt]

Thank you so much sir you made too much easy this concept for us 😃🙏

[@saileeshedge8201]

What a great explanation

[@Meliodas_o7]

Very clear!

[@madhavreddy8061]

Very nice I understood v clearly 😀😀😀😄👍👍👍👍👍👍

[@sagarshivas298]

1:12 there is no bending of light..still it is considered refraction because light travelled from one medium to the other..

[@thirupathimultitech7848]

Thank you so much sir 🙏

[@trito_official]

refraction at single curved reflecting surface
Where I can get this

[@giftonpaulimmanuel146]

Well explained sir !

[@tinydoge570]

thanks for posting this!
should we use Radian or degree as unit when calculating this?

[@anonymousarmadillo6589]

If you make an approximation SIN(i) = i, i should be in radians.

[@korupolusubhashini1346]

In which app you do this

[@melodychinedu1622]

Thanks for the wonderful explanation

[@indiantecho970]

LOVE FROM INDIA❤

[@budsandy3830]

Thank you so much ...
So helpful for ma...studies ...

[@praneshsathishkumar8889]

Deo Glorias. Thanks a billion sir.....

[@potatowarrior747]

This is the best

[@binuho1677]

It made me easy😎😬

[@diddiindira508]

Thank you very much for Crystal clear explanation

[@yuzuzukee]

This was so helpful, tysm!!!

[@ab_hi_na_nd_7331]

Which software are you using.. pleas reply

[@hzshad8560]

thank you so much .....that was super useful

[@Write_with_me_gknotes]

while making the formula we use the sign convention and put u as -u. But when we attempt numerical, we again put u as -u. Why is it so?

[@deepakjangda3726]

Thx very much bro ...
Very nice video

[@maheshkumarmalge547]

I have a doubt sir
When we substitute the values from question to mirror formula in u and v we use sign convention in other words we use coordinates rather than distance
Now in this question should I use coordinates or the distances
Plz clarify my doubt
Plz reply
I'm waiting
Tq for this video 🙏

[@cubingtubing8172]

Yes, we still have to follow the sign convention.

[@hufflepuff4444]

We'll have to use sign conventions,yes . If you want to understand why we use it twice(i.e., once while deriving the equation and for the second time when solving problems), there's a video by Khan Academy that explains the exact same thing as well:)

[@SA-bp5kw]

Very helpful

[@honeyhoney8736]

Nice explaing

[@vintonrebello4347]

There seems to be a minor fault in the reasoning. What you claim to be a general formula is obtained by applying the sign convention (taking u to be negative) and then when you derive the lensmakers formula you substitute the virtual object distance ( which is on the positive side according to your sign convention) without changing the sign. I'm sorry if I'm not clear enough!!

[@KhanAcademyIndiaEnglish]

So is your doubt for this video or for the video on lens makers?

[@vintonrebello4347]

@@KhanAcademyIndiaEnglish Both, actually. I have doubts regarding the sign convention actually.

[@vishalsaxena2355]

@@KhanAcademyIndiaEnglish I too have doubt regarding this that when to use sign convention and when not.

[@vishalsaxena2355]

@@KhanAcademyIndiaEnglish plz clear my doubt

[@KhanAcademyIndiaEnglish]

@@vishalsaxena2355 Sign conventions convert a general formula to a specific formula and vice versa.
For example, when solving a numerical, we want a formula specific to that particular numerical (for example, convex lens). So we take our formula (which is a general formula) and apply signs while substituting.
Another example is while deriving things. When you derive a formula (like in this video) you derive for a specific case (like convex surface and the object being in the rare medium giving real images - like in this video). Again to convert this specific formula to general formula we apply sign convention.
Hope this helps :). Please feel free to ask more doubts

[@prabhakargunake6069]

Great!!! ☺

[@anshusrecorder2190]

Thanks sir...super explanation

[@mayankrawat950]

a big thank you sir

[@narsimhamadhavi3231]

Why u took only tangent not done or consine

[@daddyszohar6274]

Superbbbbb sir tq

[@jekaaai]

Thank u so much! ♡

[@prathameshrumde3027]

Masterpiece sir

[@aadityajain9049]

really nice

[@RaviKumar-sw8dh]

Please Comple whole class 12 cbse syllabus as fast as possible

[@RaviKumar-sw8dh]

Thank you so much

[@saipatel1456]

Tq sir ....

[@somnaths.r4775]

👌👌

[@mathophile1912]

So this means that it would give approximate value of location of image, while mirror formula gives exact location?

[@Umar05YT-be6mg]

Nope bro it all depend on how much denser it is.

[@harshdeepsingh6302]

Thanks a lot

[@justamedicalstudent2549]

Thanks

[@basantyadav3676]

Thnx

[@VINAYYADAV-fv4hr]

Nice

[@wikimarathi]

Thank you

[@devanshithakkar2461]

Can you please please please also upload videos of last chapter of class 12 India, i.e. Communication System

[@janhvigoswami9032]

👍

[@ab_hi_na_nd_7331]

Physics is full of approximation and assumptions..😂

[@ritaranighosh6778]

Sir,why you donot gave Hindi or Bangla versions?From Bangladesh.

[@somnaths.r4775]

😢

[@dr.md.harunurrashid5743]

Why is he trying to imitate Mr. Khan's voice? That's just not alright.

[@ProBarokis]

This is the Khan academy sir

[@saipatel1456]

😂😂😠😠😠

[@adityanadimpalli8472]

One suggestion: Stop the fake accent maybe