रेडियोएक्टिव पदार्थ की अर्द्ध-आयु काल निकाले ट्रिक से!!कक्षा 12 भौतिक विज्ञान,10 नम्बर पक्का करें

[@avinaykumar7198]

Best approach to solve this .Thank you ❤❤❤

[@rkclasses22]

Avinay Kumar ji welcome

[@Randomenjoying-rw5uz]

Thank you sir youtube iss topic ko apse achhe tarike se koi nhi samjhya 😊

[@rkclasses22]

Thanks 🙏🙏 friends

[@BadshaAys]

It's long proses paper ata hoga tabhi bhi chhota jayega

[@rkclasses22]

BadshaAys ji welcome

[@Shivamkumar-sv9co]

Very nice sir ji

[@rkclasses22]

Welcome Shivam ji

[@rkclasses22]

Thanks 🙏🙏 for support

[@ambikarawat6548]

Thanku sir❤

[@rkclasses22]

Sneha ji welcome

[@SarthakGupta-ss7kv]

Sir Aap bahut achcha pada rahe hai
😊😊😊😊

[@rkclasses22]

Welcome Sarthak ji,abhi dusre channel par apko sabhi classes mil jayegi, channel nam RK CLASSES 23 Visit jarur kare

[@SurajKumar-hs4ri]

Nice class sir ji

[@All-rounder_official-m8l]

Thanks you sir very nice

[@santoshlives331]

Ye taecher hai...
Hag diya...

[@harigovindsharma5672]

मतलब