FOCAL LENGTH OF CONCAVE LENS USING CONVEX LENS:PRAKASH & MINI

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Visual Physics Tutor

Visual Physics Tutor

4 жыл бұрын

To determine the focal length of concave lens using convex lens.

Пікірлер: 162
@ritikarajan1923
@ritikarajan1923 3 жыл бұрын
In this time of covid you are no less then a hero for us sir. Thank you so much ❤️❤️
@SAHILHSOfficial
@SAHILHSOfficial 3 жыл бұрын
Yup 💯
@rajivtanwar1591
@rajivtanwar1591 3 жыл бұрын
Hi Ritika You are absolutely right
@harshalbalpande7136
@harshalbalpande7136 3 жыл бұрын
Thanks for reply 🙂
@indrawatidevi1746
@indrawatidevi1746 2 жыл бұрын
@Ritika Rajan Heyy
@ujjwalpandey4219
@ujjwalpandey4219 2 жыл бұрын
Hii
@Steve-wo5ry
@Steve-wo5ry 3 жыл бұрын
I have my board practical exam tomorrow...and I dont know this practical...thank you so much sir for helping me. God bless you!
@bhavlabhyasharma581
@bhavlabhyasharma581 3 жыл бұрын
Same bro XD
@divyansh2834
@divyansh2834 3 жыл бұрын
Same ......
@chehakmalhotra860
@chehakmalhotra860 3 жыл бұрын
Sameeeeeeeeeeee
@gracearnal6203
@gracearnal6203 3 жыл бұрын
MERA KAL H
@magicalvoice6255
@magicalvoice6255 3 жыл бұрын
Are you from CBSE board?
@nadiaozair604
@nadiaozair604 3 жыл бұрын
Really appreciate all the efforts you put in making this experiment thoroughly clear.Thanks a lot.
@adityaupadhyay2964
@adityaupadhyay2964 2 жыл бұрын
the best explanation presented on youtube .....hats off to you sir thankyou so much for your efforts
@princeprajapati9437
@princeprajapati9437 4 ай бұрын
Great job sir thank you very much... very helpful
@vershitayadav7753
@vershitayadav7753 2 жыл бұрын
amazing video sir great efforts are put forward by you for us
@MrSushant220
@MrSushant220 2 жыл бұрын
Marvellous sir, hats of to your explanation and hard wrok
@nikitapanwar14
@nikitapanwar14 2 жыл бұрын
Thank you so much sir ☺️💗.You really help me.This video is very good. You explain better than my teacher. Tomorrow is my Physics Practical and this video's really help me lot.💓❤️
@Princeraj-wt3el
@Princeraj-wt3el 2 жыл бұрын
Love you sir... Made me confident for my practicals
@simranturan9377
@simranturan9377 2 жыл бұрын
Sir thanku so much for performing this experiment ✨👍it helped alot...
@sarvatraphysics
@sarvatraphysics 2 жыл бұрын
Very Helpful... Great..👌 Thanks a lot sir...
@Irina-bn4my
@Irina-bn4my 4 жыл бұрын
Thank you! Helped a lot.
@soniyakatariya2506
@soniyakatariya2506 2 жыл бұрын
Beautiful explanation sir 💕
@walkersrish1179
@walkersrish1179 4 жыл бұрын
It was really helpful 💐
@olivesandjune.8018
@olivesandjune.8018 4 жыл бұрын
Quite helpful 🙌💯
@hungrysheaven1297
@hungrysheaven1297 2 жыл бұрын
sir is there any calculation for where we have to set the concave lens from the convex lens
@jaanviprashar7486
@jaanviprashar7486 2 жыл бұрын
i have my exam tomorrow sir and u really saved me thank u so much
@omkumarpatel3622
@omkumarpatel3622 4 жыл бұрын
Sir uh r just amazing ❤️🥰💫
@vishalparida264
@vishalparida264 3 жыл бұрын
Why was the lens placed at a distance of 42.7cm only
@unique5799
@unique5799 3 жыл бұрын
O really thanks sir It much help me for today 🤘👍
@vaishnavipandey5180
@vaishnavipandey5180 2 жыл бұрын
Thankyou sir
@amarnathbhar9529
@amarnathbhar9529 3 жыл бұрын
Sir,why you placed concave lens at that particular position ,say,at42.7 cm?
@visualphysicstutor5945
@visualphysicstutor5945 3 жыл бұрын
You can place at any arbitrary point of your choice
@AaronChristopher869
@AaronChristopher869 3 жыл бұрын
@@visualphysicstutor5945 but why 42.7cm?
@akaashgoklani5425
@akaashgoklani5425 3 жыл бұрын
@@AaronChristopher869 lol
@ajitsaharan3843
@ajitsaharan3843 2 жыл бұрын
Same Q. Sir
@aki._.1242
@aki._.1242 2 жыл бұрын
@@ajitsaharan3843 he put the lens at 42.7 since he had a slide prepared with that value
@preetisharma4270
@preetisharma4270 4 жыл бұрын
Very much helpful sir
@subhaschavan7094
@subhaschavan7094 3 жыл бұрын
Sir why u r placing concave lens at 42.7 ???
@aki._.1242
@aki._.1242 2 жыл бұрын
@AKSHAT GOKHALE he already prepared a slide or ppt with that value. so he had to put it in the exact place to get same value
@chinmaybhalerao
@chinmaybhalerao 2 жыл бұрын
@@aki._.1242 so we can put it on any value between convex lens and image needle ???
@aki._.1242
@aki._.1242 2 жыл бұрын
@@chinmaybhalerao yes but not too far. Make sure you do not move the image needle of convex lens while placing the concave in between. Change only when ur adjusting
@obitouchiha2545
@obitouchiha2545 Жыл бұрын
My name is vivek . You are amazing sir. You are lejhend
@anonymously25
@anonymously25 2 жыл бұрын
Sir tommarow is my practical exam!!! Need elders blessings 🙏
@anujupadhyay9890
@anujupadhyay9890 2 жыл бұрын
mine is today
@rajeshsinghsisodiya1468
@rajeshsinghsisodiya1468 2 жыл бұрын
🔥🔥🔥🔥
@navyatiwari276
@navyatiwari276 2 жыл бұрын
Why did you place the concave lens at 42.7 cm only?
@Flyinggaming871
@Flyinggaming871 4 жыл бұрын
Thank you soo much sir this is very helpfull for my Tommorow's practical
@Nandini-fm9hd
@Nandini-fm9hd 3 жыл бұрын
Didi can you plz tell me ki y jo isska procedure hota h y hme yd krk jana hota h ?? Yni we have to mug up the practicals written in our practical file or just simply krna ana chaiye can you guide me regarding practicals bcz being non attending I don't know anything abt them ....didi we have to write the procedure results of practicals on answer sheet there ?? So we need to learn all the things or just we should only have to understand and no need of mugging up whatever written in file ??
@Flyinggaming871
@Flyinggaming871 3 жыл бұрын
@@Nandini-fm9hd bro tell this thing first, that have ever done any practical? Like have performed them live? I think no na? So ehy u are worrying soo much..take it litee don't worry your teachere will help u a lot and no need to mug up the procedures. Only u should be aware of what is happening..as no one will read your physics procedure . they we only see your observatioonn table and result calculations. As they need correct reading..if u want to mug up then just mug up the readings and headinngs in thee observation tables...they are most imp. Else make some chits...havinng those reading tables....i have done that. And cool done . Only be prepared of your viva and learnn those question based on the topic of project file. Okay? All the best 👍💯
@Nandini-fm9hd
@Nandini-fm9hd 3 жыл бұрын
@@Flyinggaming871 tnkyu so much dii 🙏🏻❤️😊 Nandini here Thanks for guiding me may u achieve all whatever u want in ur life 😁🙏🏻
@animeislife8785
@animeislife8785 2 жыл бұрын
Term 2 anyone^.^
@preetikumari1913
@preetikumari1913 2 жыл бұрын
✌✋
@shrutikapila3388
@shrutikapila3388 2 жыл бұрын
@@preetikumari1913 ✌️🙌
@bhargavdhirhe1045
@bhargavdhirhe1045 2 жыл бұрын
Kal kiska kiska Physics Practical hai ?😂
@krishbhatia1001
@krishbhatia1001 Жыл бұрын
Aaj hai bhai😢
@monikaarya6431
@monikaarya6431 Жыл бұрын
🙋
@fanofkarnataka489
@fanofkarnataka489 Жыл бұрын
Mera
@Subhajit1290
@Subhajit1290 Жыл бұрын
3ghanta ka bad he hai
@Subhajit1290
@Subhajit1290 Жыл бұрын
@@monikaarya6431 where ru from?
@waltterhomes4200
@waltterhomes4200 Жыл бұрын
2 hours before practicals💀
@iasandgk1332
@iasandgk1332 4 жыл бұрын
Thanks a lot sir 🙏
@RNSahu-vz2ud
@RNSahu-vz2ud 4 жыл бұрын
Ya thanx. Sir
@shrutijain249
@shrutijain249 3 жыл бұрын
Sir how to find that where we have to keep the concave lens?u kept it 48,42.5..???
@stutigovil4548
@stutigovil4548 4 жыл бұрын
Thnxx a lot sir
@krishnaagarwal5696
@krishnaagarwal5696 6 ай бұрын
Sir how do you decide the position of concave lens Like 42.7 for 1st Then 45.2 Rhen 48 ...????
@JBChamp
@JBChamp 6 ай бұрын
same question have you got an answer well i think sir just took an example by himself
@vedant.s.joshi10thable45
@vedant.s.joshi10thable45 5 ай бұрын
Sir is really missing something 😮
@physicsissimple1118
@physicsissimple1118 Жыл бұрын
Thank you so much sir 🙏🙏🥰🥰
@urvashigupta8981
@urvashigupta8981 4 жыл бұрын
Thank you sir
@nandinidevatwal8011
@nandinidevatwal8011 4 жыл бұрын
thank youuuuuuu
@RanjeetSingh-cd6bl
@RanjeetSingh-cd6bl 3 жыл бұрын
Thanks
@AbhishekRaj-sj3pm
@AbhishekRaj-sj3pm 4 жыл бұрын
Great
@supercricket9184
@supercricket9184 5 ай бұрын
Sir apne L2 42.7cm kyu liya
@news_hunt_hindi
@news_hunt_hindi 3 жыл бұрын
🙏🏼🙏🏼🙏🏼🙏🏼🙏🏼🙏🏼
@nitinasterix1
@nitinasterix1 3 жыл бұрын
sir, why u and v were taken positive while solving for f, although for concave lens there values must be negative according to sign convention??
@sarveshpareek5687
@sarveshpareek5687 3 жыл бұрын
Although that should be the case but according to me it wasn't done so that the f calculated doesn't come out to be negative... I hopt its correct if not kindly correct me...😊
@ritikranjand1827
@ritikranjand1827 3 жыл бұрын
That's why study the concepts with detail...just mugging sign conventions is not suggested. The direction of the rays and the direction of measuring distance(from the optical centre) both are in same direction in both the cases( image and object distance). That's the reason but explaining things just by text becomes difficult. So hope you got It :)
@tarun2298
@tarun2298 3 жыл бұрын
@@ritikranjand1827 thats wrong explanation its simply because we are only considering magnitude and not including sign conventions bcos we already know tht convex lens has +ve focus
@Priynshu9
@Priynshu9 2 жыл бұрын
@@tarun2298 are you mad
@rctutorials6025
@rctutorials6025 2 жыл бұрын
@@tarun2298 kuch bhi
@bhaskarpandey3377
@bhaskarpandey3377 2 жыл бұрын
thnk u sir.
@mehakpreet5189
@mehakpreet5189 3 жыл бұрын
Thank u sir
@ayushjha5911
@ayushjha5911 3 жыл бұрын
why on 42.7 ?????
@pvartvalley7241
@pvartvalley7241 2 жыл бұрын
Sir why we placed cocave lens at 42cm
@mukesh3238
@mukesh3238 2 жыл бұрын
Danks..
@sarthaktyagi7337
@sarthaktyagi7337 2 жыл бұрын
thnx sir
@harshhwardhan._
@harshhwardhan._ 3 жыл бұрын
Sir ji apki personality ek number hai
@mashrafkhan1638
@mashrafkhan1638 Жыл бұрын
Thank sir
@finiteentertainment
@finiteentertainment 2 жыл бұрын
How 45.2 come in 2 record
@vershitayadav7753
@vershitayadav7753 2 жыл бұрын
sir do we have to keep in mind the sign convention during the focal length calculation?
@visualphysicstutor5945
@visualphysicstutor5945 2 жыл бұрын
yes
@mahwishrizvi7073
@mahwishrizvi7073 Жыл бұрын
Very nice explanation but sir i have a doubt. Why did you putted the concave lens at 42.7cm distance
@sonyyathulasiraman9604
@sonyyathulasiraman9604 4 жыл бұрын
Y u do place concave lens at 42.7......
@anantrajsharma2773
@anantrajsharma2773 3 жыл бұрын
yes i also want the sama ans
@SAHILHSOfficial
@SAHILHSOfficial 3 жыл бұрын
Yeah That's the only problem I am facing
@bhupinderkumar5653
@bhupinderkumar5653 3 жыл бұрын
You can keep it anywhere between the lens and image needle. 42.7cm maybe for calculations sake
@anantrajsharma2773
@anantrajsharma2773 3 жыл бұрын
@@bhupinderkumar5653 okay sir thank you so much
@kumarabhishek1196
@kumarabhishek1196 2 жыл бұрын
Sir in which school do you teach?
@ritikranjand1827
@ritikranjand1827 3 жыл бұрын
OP
@inikhilyadavv
@inikhilyadavv 2 жыл бұрын
Legend watch after 2 yr of upload
@priyadarsinikar5607
@priyadarsinikar5607 Жыл бұрын
Kal practical heiಥ_ಥ wo bhi ek hi din me both physics or chemistry
@kumikexx7994
@kumikexx7994 3 жыл бұрын
Omg
@gargijadhav8018
@gargijadhav8018 4 жыл бұрын
Dhanyawaad 😭
@erumehsan1033
@erumehsan1033 4 жыл бұрын
Maine aapko sir ke almost saare physics ke board experiment mein dekha. All the best.
@gargijadhav8018
@gargijadhav8018 4 жыл бұрын
@@erumehsan1033 and I'm done with the final board prac now!!!
@Techymaestro
@Techymaestro 5 ай бұрын
Why is the concave lens kept at 42.7 cm?
@jatin3106
@jatin3106 5 ай бұрын
Its just an example I think 😊
@Mahashiii
@Mahashiii 5 ай бұрын
just random position since you have to keep it between convex lens and image needle. btw, you have exam tomr too ? 😂
@d.r.bhowmik1208
@d.r.bhowmik1208 4 жыл бұрын
Amazing video
@alpeshalpesh4286
@alpeshalpesh4286 2 жыл бұрын
hi sir lens kahase kharede
@himanshupal6492
@himanshupal6492 Жыл бұрын
Why concave lens at 42.7 cm can't we keep it at any other position
@checkthelastmonday61
@checkthelastmonday61 6 ай бұрын
U can
@rehnumashaikh1112
@rehnumashaikh1112 4 жыл бұрын
Sir can u plzz upload experiment of half defelction in galvanometer ...and galvanometer conversion to voltmeter as well as voltmeter... Sir its urgent plzz
@rehnumashaikh1112
@rehnumashaikh1112 4 жыл бұрын
Also ammeter**
@visualphysicstutor5945
@visualphysicstutor5945 4 жыл бұрын
Rehnuma Shaikh it is uploaded
@myvizhim1587
@myvizhim1587 2 жыл бұрын
Sir i also need a short procedure sir
@d.r.bhowmik1208
@d.r.bhowmik1208 4 жыл бұрын
Sir what about any index correction please answer my doubt I have exam in 24th
@stutigovil4548
@stutigovil4548 4 жыл бұрын
u dont have to use index correction. just omit that column when u write observations
@KUSHALGOKHALE
@KUSHALGOKHALE Ай бұрын
what is so special about 42.7 cm? or is it just a lucky number for the man?
@AttitudeBoy-yy9du
@AttitudeBoy-yy9du 4 жыл бұрын
Aaj mera board ka practical hai😂😂😂😂😂
@gracearnal6203
@gracearnal6203 3 жыл бұрын
MERA KAL H BIRO
@AyushSingh-ek3bc
@AyushSingh-ek3bc 10 ай бұрын
Graph please 🙏
@kanakchoudhary4065
@kanakchoudhary4065 2 жыл бұрын
Sir I have a doubt... Why is the concave lens placed at the distance of 42.7 cm and 45.2 cm only? I mean on which basis??
@itsokash
@itsokash 2 жыл бұрын
I HAVE THE SAME DOUBT
@anujupadhyay9890
@anujupadhyay9890 2 жыл бұрын
there is no such logic there sir might already had the readings and so as to keep the calculations smooth ..he took these readings
@Manojkumar-cb8zw
@Manojkumar-cb8zw Жыл бұрын
Same doubt plz reply sir
@prabakaran-tf1nk
@prabakaran-tf1nk 8 ай бұрын
I also same doubt
@prabakaran-tf1nk
@prabakaran-tf1nk 8 ай бұрын
I think that's focal length of concave lens 12.7 cm
@pranavsingh7404
@pranavsingh7404 3 жыл бұрын
kal subha paper hai dekho kitne ate hai jai mata di
@rajashekharn2510
@rajashekharn2510 4 жыл бұрын
how L2=42.7,42.2,48
@visualphysicstutor5945
@visualphysicstutor5945 4 жыл бұрын
Rajashekhar N you can choose any distance in between
@kaushikitiwari1885
@kaushikitiwari1885 4 жыл бұрын
I have the same question Thanku
@adityachaudhary475
@adityachaudhary475 Жыл бұрын
Gfps se Koon Koon ha 😂
@goswamichennal3719
@goswamichennal3719 4 жыл бұрын
Sir Hindi midium me upload
@ankethkm
@ankethkm 4 жыл бұрын
learn english dumbo
@albinperera3434
@albinperera3434 4 жыл бұрын
@@ankethkm shit head dickhead
@bionicpenguin5471
@bionicpenguin5471 4 жыл бұрын
@@albinperera3434 Wow... What a great English writing skills you have got Mr. Albin Perera !!!.........
@albinperera3434
@albinperera3434 4 жыл бұрын
@@bionicpenguin5471 hello you too dickhead
@as4533
@as4533 4 жыл бұрын
@@albinperera3434 every guy has a dickhead. You're probably a pussy
@aanjneyvishwakiran7097
@aanjneyvishwakiran7097 2 жыл бұрын
Thank you sir
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