PU E 2026 Nuclear Physics Free Quiz 2

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PU E 2026 Nuclear Physics Free Quiz 2

PU E Quiz

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Remaining: 10

Navigator 10 Q

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General 10 MCQs

11. What happens in positron emission?

A. Beta-minus decay B. Alpha decay C. Gamma decay D. Beta-plus decay (positron emission)

12. What is gamma decay?

A. Emission of gamma rays from an excited nucleus B. Emission of alpha particles C. Emission of beta particles D. Emission of positrons

13. What are the properties of gamma rays?

A. Low penetrating power B. High penetrating power, low ionizing power C. High ionizing power D. No penetrating power

14. What is the charge of gamma rays?

A. +1e B. -1e C. No charge D. +2e

15. What is the relation between decay constant and half-life?

A. λ = T₁/₂/ln2 B. λ = ln2/T₁/₂ C. λ = 1/T₁/₂ D. λ = 2/T₁/₂

16. How much of a radioactive sample remains after one half-life?

A. 25% B. 75% C. 50% D. 100%

17. How much of a radioactive sample remains after two half-lives?

A. 50% B. 12.5% C. 6.25% D. 25%

18. What is binding energy?

A. Energy required to separate nucleus into nucleons B. Energy released in nuclear reaction C. Energy of an electron D. Energy of a photon

19. What is mass defect?

A. Total mass of nucleus B. Difference between nucleus mass and individual nucleons mass C. Mass of electrons D. Mass of protons only

20. What is the formula for binding energy?

A. E_b = mc² B. E_b = Δm c C. E_b = Δm c² D. E_b = m c

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