A radioactive sample has an activity of 1000 Bq. If its decay constant is 0.01 s^-1, how many radioactive atoms are present?
Q1. A radioactive sample has an activity of 1000 Bq. If its decay constant is 0.01 s^-1, how many radioactive atoms are present?
Answer: 100000
Explanation: Activity = λN, so N = Activity / λ = 1000 / 0.01 = 100000. Option 'B' incorrectly divides by 0.1.