NEET Physics Nuclei Questions Solved


16 gm sample of a radioactive element is taken from Bombay to Delhi in 2 hour and it was found that 1 gm of the element remained (undisintegrated). Half life of the element is 
(a) 2 hour           (b) 1 hour
(c) 12 hour         (d) 14hour

(c) N=N012t/T1/21=16122T1/2T1/2=12hour

Difficulty Level:

  • 12%
  • 6%
  • 77%
  • 6%