Law of Radioactive Decay
The half life of radian is about 1600 years. Of 100 g of radium existing now, 25 g will remain unchanged after
Show answer and solution
Answer: (d)
- , so 2 half-lives.
- years.
- So the answer is (d) 3200 years.
- Practise all 126 questions on Law of Radioactive Decay
- All 48 questions from NEET 2004 (AIPMT)
- Nuclear Physics: all topics and PYQs
More questions on Law of Radioactive Decay
- A sample of radioactive element has a mass of 10 g at an instant t = 0. The approximate…NEET 2003 (AIPMT)
- A radioactive sample at any instant has its disintegration rate 5000 disintegrations per…JEE Main 2003 (AIEEE)
- A sample of radioactive element containing 4 × 1016 active nuclei. Half life of element…NEET 2002 (AIPMT)
- If N₀ is the original mass of the substance of half-life period t1/2 = 5 years, then the…JEE Main 2002 (AIEEE)
- Half life of a radioactive element is 12.5 hour and its quantity is 256 g. After how much…NEET 2001 (AIPMT)
- Half-life period of a radioactive substance is 6 h. After 24 h activity is 0.01, what was…NEET 2001 (AIPMT)
- The half-life of a radioactive material is 3 h. If the initial amount is 300 g, then…NEET 2000 (AIPMT)
- The relation between λ and T1/2 as (T1/2 → half life)NEET 2000 (AIPMT)