PU CSS 2026 Nuclear Physics Free Quiz 2

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PU CSS 2026 Nuclear Physics Free Quiz 2

PU CSS Quiz

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Remaining: 10

Navigator 10 Q

General

General 10 MCQs

11. 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

12. What is the charge of gamma rays?

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

13. What is half-life?

A. Time for half of the nuclei to decay B. Time for all nuclei to decay C. Time for half of the nuclei to become stable D. Average lifetime of a nucleus

14. 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

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

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

16. 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

17. 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

18. For which element is binding energy per nucleon maximum?

A. Hydrogen B. Uranium C. Helium D. Iron

19. What is nuclear fission?

A. Splitting of a heavy nucleus into lighter nuclei B. Combining of light nuclei into a heavier nucleus C. Emission of alpha particles D. Emission of beta particles

20. What is nuclear fusion?

A. Splitting of a heavy nucleus B. Combining of two light nuclei C. Emission of alpha particles D. Emission of beta particles

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