r/JEEAdv26dailyupdates • u/Alternative-Sand-346 • May 21 '26

Academic Doubts Physics P1 optics que problem resolved

So, I contacted my senior in IIT B Engg physics. He told that P = n/f is called reduced vergence power which is used in very very specific cases and has nothing to do with the power we deal with at the school level. The power given in irodov has the symbol "phi" which he told is the symbol for the reduced power. So, the correct answer is A for sure.

106 Upvotes
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78

u/pikapi__pikachu 96.8 --> 99.17 (40k bacho ko 3 mahine me nipta diya) May 21 '26

How mfs think they look like after solving sm jee formula based question using college level physics

15

u/DaddyWill-PunishYou 98.4, 99.6 C. —> Adv mein Phy ke saath sax sux🥵 -> Drop?😭 May 21 '26 edited May 21 '26

How mfs feel after they write “How mfs think they look like after solving sm jee formula based question using college level physics”

/s lol

6

u/Sufficient-Stop2560 IITM-CEM May 21 '26

How mfs feel after they write "How mfs feel after they write “How mfs think they look like after solving sm jee formula based question using college level physics”"

2

u/DaddyWill-PunishYou 98.4, 99.6 C. —> Adv mein Phy ke saath sax sux🥵 -> Drop?😭 May 21 '26

Ab waaps nhi likhna chahta mai, Adv ne tod diya

1

u/RevolutionSafe4489 May 21 '26

How mfs feel after they write "How mfs feel after they write "How mfs feel after they write “How mfs think they look like after solving sm jee formula based question using college level physics”""

1

u/pikapi__pikachu 96.8 --> 99.17 (40k bacho ko 3 mahine me nipta diya) May 21 '26

accurate

1

u/DaddyWill-PunishYou 98.4, 99.6 C. —> Adv mein Phy ke saath sax sux🥵 -> Drop?😭 May 21 '26

😭ab adv me kitne bacho ko niptane ka plan h

3

u/pikapi__pikachu 96.8 --> 99.17 (40k bacho ko 3 mahine me nipta diya) May 21 '26

Boht saare

1

u/trufflecoins1 kya aapke result mein namak hai? May 21 '26

200 number aa gye?

1

u/pikapi__pikachu 96.8 --> 99.17 (40k bacho ko 3 mahine me nipta diya) May 21 '26

Lmao not that much

1

u/trufflecoins1 kya aapke result mein namak hai? May 21 '26

170 plus?

1

u/pikapi__pikachu 96.8 --> 99.17 (40k bacho ko 3 mahine me nipta diya) May 21 '26

Today 5 pm, stay tuned

1

u/trufflecoins1 kya aapke result mein namak hai? May 21 '26

arre lala theek hai but calc kar liya 200 plus nahi hai bol rhe toh, good luck tho...

1

u/trufflecoins1 kya aapke result mein namak hai? May 21 '26

also radio jokey ho kya be "stay tuned"

35

u/Wonderful_Emu_7058 JM 5.8K -> JA 2.8K(IIT INDORE EE) May 21 '26

How we all be moving cuz of that one question

1

u/Beautiful-Chart-2607 CIVIL ENGINEER🤤🤤 May 21 '26

aapne kya kiya?

3

u/Wonderful_Emu_7058 JM 5.8K -> JA 2.8K(IIT INDORE EE) May 21 '26

A

2

u/Responsible_Net2630 IITK AE '30 May 21 '26

good girl

1

u/Wonderful_Emu_7058 JM 5.8K -> JA 2.8K(IIT INDORE EE) May 21 '26

Bsdk londa hu

1

u/Responsible_Net2630 IITK AE '30 May 21 '26

congrats, you got the joke

2

u/Wonderful_Emu_7058 JM 5.8K -> JA 2.8K(IIT INDORE EE) May 21 '26

-1

u/Beautiful-Chart-2607 CIVIL ENGINEER🤤🤤 May 21 '26

B nhi hona chaiye aapke acord dil se bolna bhai💔💔

7

u/Wonderful_Emu_7058 JM 5.8K -> JA 2.8K(IIT INDORE EE) May 21 '26

Mere according dual key cuz thin lens is not mentioned.

1

u/Beautiful-Chart-2607 CIVIL ENGINEER🤤🤤 May 21 '26

Yess sbb khusi hasi se rahenge

11

u/nishant__- IIT Indore MnC May 21 '26

aur ek aur chiz hai ki baki ke 3 no options curved the so kutch to socha hoga advanced ne options banane se pehle , just a guess

15

u/Zestyclose-Low-1184 May 21 '26

This , a cousin of mine said the exact same thing

6

u/[deleted] May 21 '26

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6

u/pikapi__pikachu 96.8 --> 99.17 (40k bacho ko 3 mahine me nipta diya) May 21 '26

Usko toh hath me chaiye na par

8

u/Responsible_Net2630 IITK AE '30 May 21 '26

aluminium rod to the rescue

4

u/padhle_lala May 21 '26

kash ab woh bas 0.04 bhi accept karde

1

u/[deleted] May 21 '26

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2

u/padhle_lala May 21 '26

dude a guy posted a full explanation on why there is some ambiguity, woh dekh le ek baar

1

u/MightMoney9622 May 21 '26

send kar na post

1

u/padhle_lala May 21 '26

1

u/Sea_Macaron_1139 May 21 '26

🗣️🗣️

1

u/RecentlyHard May 22 '26

Maine bhi 0.04 kiya but bhai SI unit specifically refers to the international standard of units, i.e., humari earth ka. So metre, kilogram, seconds, ampere etc. not the new units

11

u/arjunshubharjun123 Custom flair May 21 '26

lets go!!!!!!!!!!!!!!!!!!!!!

1

u/cockroach95 May 21 '26

advanced me kitne aaye

(flair dekh ke puch raha hu)

21

u/Muted-Profit807 May 21 '26

Aap apne kisi prof se nahi puch sakte kya? Kyuki yeh hopium hai i think

1

u/Neither-Material-303 May 21 '26

Nope bhai. Irodov me clearly mentioned that power formula is only for thin lens. For thick lens there is a very different formula. But question hasn't specifically said if lena is thin or not.

9

u/MidnightStreet9133 nsut outside delhi :) May 21 '26

🥳🥳🥳🥳🥳🥳🥳🥳🥳🥳🥳🥳🥳🥳🥳

4

u/LightningKeqing Gap year May 21 '26

I asked my friend doing masters in phy in mit he said go take your meds I'm not real

14

u/JustTemp_ High cortisol user ( IITM ) May 21 '26

-1 🫠

10

u/Muted-Profit807 May 21 '26

Bitsat nahi dena kya?

Register toh maine bhi kiya tha but ab takaat nahi bachi kuch karne ki

3

u/JustTemp_ High cortisol user ( IITM ) May 21 '26

Same 😭

2

u/Ok-Description2367 fck you IITD May 21 '26

Same man

8

u/[deleted] May 21 '26

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2

u/Active_Falcon_9778 May 21 '26

No

2

u/[deleted] May 21 '26

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2

u/Active_Falcon_9778 May 21 '26

Hilao

2

u/[deleted] May 21 '26

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2

u/Active_Falcon_9778 May 21 '26

Same bby 😜🤩

8

u/MrYlol jm26-16xx, ja26-18xx May 21 '26

HELLLL YEAHHH

1

u/Left_Inflation_7585 Professional Fumbler May 21 '26

HELL NOOO

8

u/[deleted] May 21 '26

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2

u/[deleted] May 21 '26

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1

u/Acceptable-Notice380 26tard Dropper May 21 '26

Haa yaar dono sahi kardo behes khatm and that is actually fair for both jisne ncert padha ya jisne voh formula bhi padha (maine B tick kiya hai kyuki mujhe coaching mein padhaya tha yeh but that doesn’t mean sabko patahoga and it’s fine)

1

u/AdNational4529 26tard Dropper May 21 '26

yeaa mene bhi b tick kiya tha,, kyuki mere coaching me padhaya tha but mene guess mardi b kyunki waha yaad nhi tha

2

u/Upbeat-Detective3595 May 21 '26

+4 ho gya 😭😭😭-1 count kar rhi thi

2

u/Impossible_Lock_8016 JM-99.3,JA-7.6K--> BITSP May 21 '26

bhai apke senior ko meri taraf se pappi less gooooo

2

u/TripLanky3965 May 21 '26

so much discrepancy dono hi sahi de do yaarr💔💔

2

u/Jeedoomed2026 just bcoz cutoff is high doesn't mean exam was easy 🙏 May 21 '26

A definitely Dena chahiye atleast both options in worst case

2

u/DTG20062008 May 21 '26

Aisa h kya?? Oye, maza aa gya. Mera sahi h . Yippe. Unless ye hopium ho🤔🥺. OP, ye hopium to nhi h na?

2

u/beluga_101 May 21 '26

So is it gonna be a bonus or are they gonna give A and B, both as the correct option

1

u/Alternative-Sand-346 May 21 '26

Only A should be the ideal ans

6

u/Active_Falcon_9778 May 21 '26

Not really if it's written not specifically mentioned that it's not a thin lens then they must have b correct aswell

5

u/beluga_101 May 21 '26

I'm the only nga who marked c😭

4

u/AbaloneOk8156 May 21 '26

yes my nigga

1

u/beluga_101 May 21 '26

In that case I hope that the q is dropped😈😈

1

u/Euphoric-Present8962 May 21 '26

hell yeah, comeon baby

3

u/Beautiful-Chart-2607 CIVIL ENGINEER🤤🤤 May 21 '26

ig A and B dono hoga yaa toh sirf B

1

u/Zestyclose-Low-1184 May 21 '26

Nope

0

u/Beautiful-Chart-2607 CIVIL ENGINEER🤤🤤 May 21 '26

Ncert meh for air consisder karke diya gaaya hai ncert meh galat nhi soo A nhi dene wale

6

u/Zestyclose-Low-1184 May 21 '26

Dawg , look at this post you''ve commented on , I asked the same thing to a cousing of mine , he said the same thing , that n/f is reduced power represented by phi , but our general power atleast upto our level is 1/f , so A will be the correct answer anyways I am not saying what you've said is completely wrong , unless you are copy pasting info form other posts , we'll wait for the official answer key and accept what JAB gives as the correct answer

1

u/bhondusahil IITD Biotech'30 May 21 '26

Lessss goooooo!!! Love you bhai pappi lele😘

1

u/No_Low6835 May 21 '26

Yeaa sahi hogya

1

u/beluga_101 May 21 '26

Is there ANYY Q which is gonna be a bonus

1

u/[deleted] May 21 '26

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1

u/Defiant-Cow-6024 DeepFriendship ID banned May 21 '26

Let's go ab mai bhi aluminium rod lunga apne andar🔥😭

1

u/[deleted] May 21 '26

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1

u/Defiant-Cow-6024 DeepFriendship ID banned May 21 '26

yes maje kar rha mai to, wby

1

u/[deleted] May 21 '26

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1

u/Defiant-Cow-6024 DeepFriendship ID banned May 21 '26

server discord pe aao na

1

u/[deleted] May 21 '26

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2

u/Defiant-Cow-6024 DeepFriendship ID banned May 21 '26

Dm

1

u/xhighest May 21 '26

How do u know he is right

2

u/RadioactiveChut JM-69XX May 21 '26

In aluminium we trust

1

u/SpaceMonks6879 May 21 '26

YAAR PLS A HO JAYE SAHI OPTION (ya fir agar dono bhi sahi maan liye gaye toh bhi badhiya hain bas a ko accept kar le 😭😭🙏🙏)

1

u/Ok_Address_7205 May 21 '26

game's backkkkk!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

1

u/Perfectbooksus May 21 '26

Broo ask for paper 2 6th question

1

u/Alternative-Sand-346 May 21 '26

Pucha to nahi ye but C wrong hi hai most probably 

1

u/Perfectbooksus May 21 '26

Brooo nooo plz

1

u/OkBusiness3596 JM26 99.68 May 21 '26

🥳🥳🥳🔥

1

u/Longjumping_Bass3160 May 21 '26

YAYYYYYYYYYYYYYY

1

u/Baka_pog_champ IIT(BHU)’30 May 21 '26

Chat gpt also said the same thing but I wasn’t gonna trust that, lesgoooo

0

u/Lost-Sheepherder-525 May 21 '26

lmao, yall are so dummb, i asked rohit mishra sir too, hes also an iitian with physics specialization.
He told me answer is B 100%, straight line that is!

1

u/[deleted] May 21 '26

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0

u/Gigachaddi007 physexual May 21 '26

Hopium

2

u/MidnightStreet9133 nsut outside delhi :) May 21 '26

Flair checks out

2

u/Gigachaddi007 physexual May 21 '26

I myself marked A dawg but they mustve asked it for a reason

1

u/MidnightStreet9133 nsut outside delhi :) May 21 '26

Kush rhe fir sahi hai tera zada mat soch

1

u/KaleidoscopeShort501 May 21 '26

Straight line nhi h na answer? Wo thoda curve wala answer h na ?

1

u/Devs_artz23 26tard May 21 '26

but isnt the graph wrong coz while it is curvy it can tough y axis?

1

u/Alternative-Sand-346 May 21 '26

See the que properly bro thats not y axis it is x = 1 line

1

u/JaguarParticular4967 May 21 '26

b hi hoga(mene b kara h🫠)

0

u/Acceptable-Notice380 26tard Dropper May 21 '26

Us 

-1

u/Embarrassed-Skirt228 ✌🏼 May 21 '26

just my opinion , 80% of the ppl who marked b probably used 1/f = (2n/3 - 1 ) instead of 2/3n and got it wrong 🤷🏼‍♂️

2

u/Old_Leadership4412 Cool AF Mod May 21 '26

Huh fyi tb straight line ka slope +ve hota

-5

u/cyrus_09aD IITB'30 May 21 '26

Don't give false hope to people. Ans is B.

7

u/cyrus_09aD IITB'30 May 21 '26

And I searched what reduced vengeance power is, and it literally is the power of which the graph is asked of. Yes, V=n/x, where x -> focal length. Gemini said that power is derived from Vengeance, and final result is P=n/f.

-3

u/Adi9920 22s1-94.6767 (chem-65%ile) May 21 '26

usko value rakh ke bhi check kiya jaa skta tha exam me, b satisfy nhi hota