Nuclei

Related Questions

• The activity of a radioactive sample is measured as 9750 counts per minute at t = 0 and as 975 counts per minute at t = 5 minutes. The decay constant is approximately

  ---

• Which of the following statements are true regarding radioactivity (I) All radioactive elements decay exponentially with time (II) Half life time of a radioactive element is time required for one half of the radioactive atoms to disintegrate (III) Age of earth can be determined with the help of radioactive dating (IV) Half life time of a radioactive element is 50% of its average life period Select correct answer using the codes given below Codes :

  ---

• Name of the India's first nuclear reactor is

  ---

• The half-life of $B{i^{210}}$is 5 days. What time is taken by (7/8)th part of the sample to decay

  ---

• If the radioactive decay constant of radium is $1.07 \times {10^{ - 4}}$per year, then its half life period is approximately equal to

  ---