Question

The half-life of radium is 1600 years. The fraction of a sample of radium that would remain after 6400 year is ……….

(A) \(\frac{1}2\)

(B)\(\frac{1}4\)

(C) \(\frac{1}8\)

(D) \(\frac{1}{16}\)

Answer 1

 (D) \(\frac{1}{16}\)