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What is positive beta - emission?...

What is positive `beta` - emission?

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When a neutron splits into a proton, neutrino and positron, the emission is called positive `beta` emission.
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NEW JOYTHI PUBLICATION-NUCLEI-EVALUATION QUESTIONS AND ANSWERS
  1. a. What is positron ? " " b. What is its charge ?

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  2. What is " " i. neutrino " " ii. antineutrino? Explain with exa...

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  3. alpha-particles have a high ionizing power. Justify your answer.

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  4. a. Are the equations of nuclear reactions such as ""(7)^(14)N + ""(2)^...

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  5. Complete the nuclear reaction a. ""(5)^(10)B + ………… to ""3^7Li + ""(...

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  6. a. Which is more stable , ""(3)^(7)Li " or " ""(3)^(4)Li ? b. Give...

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  7. What is meant by chain reaction ?

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  8. a. Are heavy nuclei stable or unstable ? b. Give reason.

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  9. You are given two nuclides ""(3)^(7)X and ""(3)^(4)Y. a. Are they th...

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  10. What is the ratio of nuclear densities of two nucleus having mass num...

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  11. a. Give the expression for the radius of a nucleus. b. What is the r...

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  12. a. Is free neutron a stable particle? b. Give reason.

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  13. a. Give two radioacitve elements which are not formed in observable qu...

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  14. What is positive beta - emission?

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  15. The mechanism of beta emission can be stated as a neutron decay. Expla...

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  16. Which raw material is used in a fast breeder reactor ?

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  17. Heavy water is used as a moderator in a nuclear reactor. Give reason.

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  18. What are a. Slow neutrons? b. thermal neutrons?

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  19. a. What factors make a fusion reaction difficult to achieve ? b. Why...

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  20. What is meant by self sustained nuclear reaction?

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