NEET Physics Nuclei Questions Solved


After 280 days, the activity of a radioactive sample is 6000 dps. The activity reduces to 3000 dps after another 140 days. The initial activity of the sample in dps is (a) 6000 (c) 3000 (b) 9000 (d) 24000

Difficulty Level:

  • 7%
  • 19%
  • 13%
  • 63%
Crack NEET with Online Course - Free Trial (Offer Valid Till August 26, 2019)