principle of reversibility of light ll प्रकाश के उत्क्रमणीयता का सिद्धांत

[@AbdullaAnsari-u3c]

Very nice video sir ❤❤❤

[@ankur.raj2312]

Thanks sir 🎉🎉

[@ShashiYadav-x4e]

वक्त से लड़कर जो नसीब बदल दे,
इंसान वही जो अपनी तकदीर बदल दे,
कल क्या होगा कभी मत सोचो,
क्या पता कल वक्त खुद अपनी तस्वीर बदल ले।👍👍

[@AnshikaKumari-u4c]

Super sir 👌👌👌❤️❤️❤️🥰 🥰🥰

[@AbhishekKumar-k1o7f]

Thank sir

[@RICHADUBEY-p7d]

3/4

[@VishalKumarGupta-jl3uj]

Jay hind sir

[@ujjwalkumar-hd05]

Super sir😇

[@laluverma5175]

Jai hind Guru ji 🙏🙏🙏

[@dindayalsingh3519]

Thanks sir ❤❤ you are best Teacher❤

[@ruchiyadav-co2tb]

🙏🙏🙏🙏

[@Smart_boy_7870]

Nice video sir ❤❤❤❤❤🎉🎉🎉🎉

[@bablusah-ht2jq]

🪔 18:32 🪅Answer 3/4 sir 🪔

[@mc_5M]

JAY SHREE RAM 🚩🚩🫵

[@KhushbuKumari-n7i]

3 by 4 answer hoga

[@MukeshMukesh-w3u]

3/4 hoga sir

[@goldenkumar3358]

3/4 correct answer

[@ManojKumar-nq3xe]

3/4 Hoga

[@dindayalsingh3519]

3/4 hoga sir