NEET Physics Nuclei Questions Solved


The half-life of At215 is 100 μs. The time taken for the radioactivity of a sample of At215 to decay to 1/16th of its initial value is 
(a) 400 μs               (b) 6.3 μs 
(c) 40 μs                 (d) 300 μs

(a) The radioactivity of a sample decays to 116th of its initial value in four half lives.

Difficulty Level:

  • 59%
  • 18%
  • 12%
  • 12%
Crack NEET with Online Course - Free Trial (Offer Valid Till August 23, 2019)