Which of the following statements are true regarding radioa…

Physics Atomic and Nuclear Physics Statement Based MCQ (Single Correct)

Which of the following statements are true regarding radioactivity?

(I) All radioactive elements decay exponentially with time

(II) Half lifetime 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 lifetime of a radioactive element is 50% of its average life period Select correct answer using the codes given below

Codes:

I and II

I, III and IV

I, II and III

II and III

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