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What is a positron ?...

What is a positron ?

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Positron is an anti particle of electron. Its mass is equal to that of electron. Its charge is equal in magnitude but opposite in sign.
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SUBHASH PUBLICATION-NUCLEI-NUMARICALS WITH SOLUTIONS
  1. What is a positron ?

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  2. A given coin has a mass of 3.0g . Calculate the nuclear energy that wo...

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  3. A radioactive sample has ,a half life of 10 days. What is its disinteg...

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  4. The decay contsnt of a radioactive substance is at the rate of 0.05 pe...

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  5. A radioactive sample of half life T((1)/(2)) contains 1000 nuclei. How...

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  6. A radioactive element has a half life of 20 days . What amount would b...

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  7. Radioactive element has a half life of 25 minutes. Calculate the fract...

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  8. Find the activity of 1 gm of radium (.(88)Ra^(226))Whose half life is ...

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  9. A radioactive sample has a half life of 30 minute. How long will it ta...

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  10. Calculate the time reuired for 40% of a radioactive sample to disinteg...

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  11. A certain radioactive sample decays for a time period equal to its me...

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  12. Calculate the specific binding energy of the nucleus of .(7)^(14)N. Gi...

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  13. Determine the mass of 10 k Ci sample of .(11)Na^(24) Whose half life i...

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  14. Determine the mass of Na^(22) which has an activity of 5mCi. Half life...

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  15. A radio active isotope has a half - life of 'T' years. How long will i...

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  16. The radio nuclide .^(11)C decays according to .(6)^(11)C rarr (5)^(11)...

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  17. How long can an electric lamp of 100W be kept glowing by fusion of 2.0...

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  18. Estimate the order of nuclear density.

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  19. A souree contains two phosphorus radio nuclides .(15)^(33)P (T(1//2)=1...

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  20. Obtain the maximum kinetic energy of beta- particle and the radiation ...

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  21. Activity of a certain radioactive sample is 25 muCi at the end of 20 d...

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