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Which of the following statements are true?I. All radioactive elements decay exponentially with time. II. Half-life time of radioactive element is the time required for one half of the radioactive atoms to disintegrate. III. Age of the earth can be determined by radioactive dating. IV. Half-life time of a radioactive element is fifty per cent of its average life period. Select the correct answer using the codes given below: Codes

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Modern physics is a branch of physics that deals with the post-Newtonian concepts in the world of physics. It is based on the two major breakthroughs of the twentieth century: Relativity and Quantum Mechanics. Quantum effects typically involve distances related to atoms.


Which of the following statements are true?<br />I. All radioactive elements decay exponentially with time. II. Half-life time of radioactive element is the time required for one half of the radioactive atoms to disintegrate. III. Age of the earth can be determined by radioactive dating. IV. Half-life time of a radioactive element is fifty per cent of its average life period. Select the correct answer using the codes given below: Codes






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