Match List I with List - II.
| List - I | List - II |
| (A) Low Mass number nuclei | (I) Medium penetrating power |
| (B) Electron microscope | (II) Nuclear reactor |
| (C) Beta decay | (III) Diffracted electron |
| (D) \( {}_{92}^{235}\mathrm{U} \) | (IV) Fusion |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A)-(IV), (B)-(III), (C)-(I), (D)-(II)
Each item is linked to the process or property it is best known for.
(A) Low Mass number nuclei — this matches (IV) Fusion. Light nuclei have a low binding energy per nucleon, so joining two light nuclei into a heavier one releases energy.
(B) Electron microscope — this matches (III) Diffracted electron. It works on the wave nature of electrons: fast electrons have a de Broglie wavelength far shorter than that of light, and they are diffracted and focused like waves, giving a much higher resolution.
(C) Beta decay — this matches (I) Medium penetrating power. Beta particles penetrate more than alpha particles and less than gamma rays.
(D) \( {}_{92}^{235}\mathrm{U} \) — this matches (II) Nuclear reactor. Uranium-235 undergoes fission when it absorbs a slow neutron, and its controlled chain reaction is the energy source of a nuclear reactor.