लेंस की वायु में फोकस दूरी एवं लैंस को द्रव में डुबोने पर उसकी फोकस दूरी का अनुपात ज्ञात कीजिए

[@the_prince.master]

Bahut achcha samjhaya sar aapane❤❤

[@studyguru165]

♥️♥️♥️

[@sambhrantpandeyji]

Thanks sir ji akk baar me samaj me aa gaya

[@ArpitKumar-z5l]

Thanks guru hi hamra samchh me aa gayle❤❤❤

[@Dk_Adesh_Gaming]

Bhai ki voice ❤

[@SumitKumar-pe5su]

Thank you sir itne ache se samjaane ke liye ❤❤❤

[@studyguru165]

♥️♥️♥️

[@a_to_z987]

Thanks brother .
In this topic this is the best explanation of the video that I have seen yet

[@AdityaGupta-g6l]

Thankyou sir jii.......😊❤

[@Pathakji-kc8ke]

❤❤❤

[@RAJATFF899]

Thank you so much sir

[@studyguru165]

♥️♥️♥️

[@Pinkisharma1t]

Thanks brother

[@anjaliupa740]

Thanks sir ji bohot acha

[@studyguru165]

♥️♥️♥️

[@SushantYadav-sp2up]

Hii

[@YogendraYadav-xw1bd]

Unsolve se kon kon aya h

[@RaviVlog06k]

Scrin sot ka lia aga sa to hut jiao plis

[@Manvisingh-oj4ws]

Nice video sir 👌

[@studyguru165]

Thanks ❤️♥️♥️

[@Fact.Rajbhi]

❤

[@studyguru165]

Thanks ♥️♥️♥️

[@Arnav..0]

Aap saharanpur sa ho kya ji❤

[@studyguru165]

Yes ♥️♥️♥️

[@Manvisingh-oj4ws]

Thank you sir

[@studyguru165]

Welcome ♥️♥️♥️

[@Prince_Zain...]

Yahi dhund rha tha bhaiya ji

[@studyguru165]

Okk thanks ♥️♥️♥️

[@KamyaGupta-o5u]

Ye question unsolve me h .....aur my ans is correct 😁

[@KuldeepKumar-ih8mc]

Nice

[@KrishnmurariPal-s7m]

Sir numerical mai bahut problem hoti hai or ab 2 month bache hai exam ke kya kre kuchh smjh mai nhi aa rha hai please sir support me😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭

[@warrior_boi_]

Sir i am from uttar pradesh sir aap kaha se ho

[@studyguru165]

Me bhi ♥️♥️♥️

[@happybrothershb8088]

Mai bhi hoo

[@RajeshYadav-px4vo]

Mai bhi hu

[@Future_Iitiannnn]

Yeah me too 🙂

[@Future_Iitiannnn]

❤

[@SaniyaAnsari-s7y]

❤❤❤❤

[@KuldeepKumar-ih8mc]

Thank you sir

[@SaumyaSingh-c6r]

Thank you sir