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Activity
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In this lesson I have explained about activity and Radioactive Equilibrium.

Amrit Lal
Top Physics Educator 80% questions in NEET19 were directly from my lessons. Mentor/Motivator. Author. Youtube- iStart-Education

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(2)
U
Unacademy user
Thankyou! Informative and helpful! Someone has suggested maps+current affairs! If you could do that would be great!
awsome sir 👌🙏💯✔🔥👍🏼