Question

If nt number of radioatoms are present at time t, the following expression will be a constant :

• A. (A) nt/t
• B. (B) In nt/t
• C. (C) -d In nt/dt
• D. (D) t.nt

Answer 1

Answer: (C)

(C) -d In nt/dt

Answer 2

Explanation:
−dNdt=λN⇒−dln⁡Ndt=λHence (C)