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What is meant by activity of a radioacti...

What is meant by activity of a radioactive substance? Write its SI unit.

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CHHAYA PUBLICATION-ATOMIC NUCLEUS-EXAMINATION ARCHIVE
  1. Draw the variation of binding energy per nucleon with mass number of a...

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  2. Define binding energy and mass defect of a necleus . What is the relat...

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  3. Write down the equation of beta-decay . Why is the detection of neutri...

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  4. Why is nuclear fusion reaction called a thermonuclear reaction ?

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  5. In a nuclear decay, a nucleus emits one alpha-particle and then two be...

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  6. A radioactive element emits 2 alpha-particles and 3 beta-particles . T...

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  7. Draw the curve showing the variation of binding energy per nucleon as ...

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  8. R = R0A^(1//3) (R0 = constant, A = Mass Number), R = radius of nucle...

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  9. What is meant by activity of a radioactive substance? Write its SI uni...

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  10. Half-life of a radioactive substance is 30 days. Number of atoms in th...

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  11. For the radioactive nuclei that undergo either alpha or beta decay, wh...

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  12. Radon-222 has a half-life of 3.8 days. If one starts with 0.064 kg of ...

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  13. If the half-life of a radioactive nucleus is 3 days, nearly what fract...

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  14. Half-lives of two radioactive elements A and B are 20 minutes and 40 m...

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  15. A radioactive nucleus A with a half-life T, decays into a nucleus B. A...

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  16. The binding energy per nucleon of .3^7Li and .2^4He nuclei are 5.60 M...

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  17. A radioisotope Y with half-life 1.4xx10^9 years decays to X which is s...

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  18. If radius of the .13^27Al nucleus is taken to be R"Al" , then the radi...

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  19. The energy liberated per nuclear fission is 200 MeV. If 10^20 fissions...

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  20. For a radioactive material , half-life is 10 minutes . If initially th...

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