Question

If \(N_0\) is the original mass of the substance of half-life period \( t_{\frac12} = 5\) years, then the amount of substance left after 15 years is

• A. \(\frac{N_0}{8}\)
• B. \(\frac{N_0}{18}\)
• C. \(\frac{N_0}{2}\)
• D. \(\frac{N_0}{4}\)

Answer 1

The Correct Option is A

The correct option is(A):\(\frac{N_0}{8}\)