Navigate

If 20% of a radiactive element decays in 10 days, then amount of original material left

If 20% of a radiactive element decays in 10 days, then amount of original material left after 30 days is (approx)

Options

(a) 78%
(b) 62%
(c) 51%
(d) 48%

Correct Answer:

51%

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

UP2015
admin:

Related Questions

  1. The angular velocity of a wheel increases from 100 rps to 300 rps in 10 seconds.
  2. In R-L-C series circuit, the potential differences across each element is 20 V.
  3. A ball rolls without slipping. The raidus of gyration of the ball about an axis
  4. If a wire is stretched to four times its length, then the specific resistance
  5. In an interference experiment, third bright fringe is obtained at a point