NEET Physics Nuclei Questions Solved


The half life of the isotope Na1124 is 15 hrs. How much time does it take for 78th of a sample of this isotope to decay

(a) 75 hrs               (b) 65 hrs
(c) 55 hrs               (d) 45 hrs

To view Explanation, Please buy any of the course from below.
Complete Question Bank + Test Series
Complete Question Bank

Difficulty Level: