टार्च और गाड़ी का हैडलाइट इतनी दूर तक रोशनी कैसे करता है? जानकर चौक जाओगे

[@Krishnayt-07g]

You are great teacher sir 3:58 ❤❤❤😊

[@RohanChaudhari-qh2zc]

Beautiful explaination❤

[@niteeshzn96]

Vote for khan sir 👍🙏

[@AshishKumar-dm7ek]

Chunav kab hai?

[@mkrrupesh5087]

Khan sir best teacher hai

[@p.k.953]

Aage se lagne wali kaach ya plastic ki cover bhi useful hoti hai kuch torches mein jin ke madad se roshni sidhe line mein aage jaaye isse do kaam hote hai torch se padne waali roshni ke beech mein ek bohot ujala wala kshetra banta hai wahi piche ki concave lens se aaju baju mein ek dhundla sa magar bada prakash ka kshetra banta hai

[@p.k.953]

Please make longer videos

[@ViralJanSuraaj]

Lantern also follow this principle ❤❤❤

[@dikshamongre1712]

Wow 😂❤❤❤❤

[@sushilgupta3111]

"Kisi ko koi dikkat ...."😅

[@DeepakRastogi-pb4jz]

😊😊😊😊

[@masayaff3761]

Dhibari kya hota hai Khan sir

[@akshaypatel4599]

Sir LED system samjao. Plz

[@SanjeetKumar-ri3bl]

Avatal darpan❤

[@GuptaJi-qd5bt]

Jay hind sir

[@gopalray8862]

Kon kon khan sar ko padand karta hai❤

[@RRGAMING55442]

Sir short video na dala karo ..🙏

[@oNkArdEsHmUkH-ej4td]

Sir aapne aaj subh 8.15 ko Rocky Singh Sir ko call lagaya tha na ??

[@dileepnishad5008]

Sir aaj ki torch me age utal darpad bhi lag kar a rha taki rosni bhot door tak ja sake.

[@LayakSingh-se6do]

Sir,navste

[@Akash_kushwaha01001]

Jay hind 🇮🇳🇮🇳

[@ks-eb5mf]

Tarch k aage uttal darpan lagaya jata h ,uska kaam light ko door tk le jana hota h

[@SanjeetKumar-ri3bl]

Yes sir

[@Shubham_ku..07]

Kon kon ko pasand hai Khan sir❤❤❤

[@DSSachinrells-tc7po]

Class 12th ka Model paper BBD है

[@_pandey__007]

4:07 timestamp pr kisi ne kuch notice Kiya ..?

[@udayramsingh5164]

Sir Mai 14 year ka hu Calss 8 me ❤Sp❤ banana chahta hu

[@Abhijeetkumar-rk5nq]

Light chapter ka khali English

[@RiteshKumar-ov4wx]

Kon kon khan sir ko dil se manta h❤❤❤❤❤❤

[@akshayyadav5862]

me manta hu

[@rajeshtiwari6856]

hmare khan sir to mote ho gaye hai 😃😃

[@Amarjeet_Kumar9341]

🎉🎉🎉🎉🎉🎉🎉

[@Amarjeet_Kumar9341]

Sar