NEET Physics Nuclei Questions Solved


The count rate of a Geiger Muller counter for the radiation of a radioactive material of half-life 30 min decreases to 5 s-1 after 2 h. The initial count rate was [1995]

(1) 20 s-1             (2) 25 s-1             (3) 80 s-1              (4) 625 s-1

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

Difficulty Level: