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Match List - I (Fundamental Experiment) with List - II (its conclusion) and select the correct option from the choices given below the list: List-I A. Franck-Hertz Experiment B. Photo-electric experiment C. Davison-Germer experiment List-II (i) Particle nature of light (ii) Discrete energy levels of atom (iii) Wave nature of electron (iv) Structure of atom

1. (A)-(ii); (B)-(i); (C)-(iii)
2. (A)-(iv); (B)-(iii); (C)-(ii)
3. (A)-(i); (B)-(iv); (C)-(iii)
4. (A)-(ii); (B)-(iv); (C)-(iii)

Correct answer: (A)-(ii); (B)-(i); (C)-(iii)

Solution

The Franck-Hertz Experiment demonstrated the existence of discrete energy levels in atoms, confirming that electrons occupy specific energy states. The photoelectric experiment provided evidence for the particle nature of light, showing that light can eject electrons from a material. The Davison-Germer experiment confirmed the wave nature of electrons through diffraction, illustrating their dual wave-particle behavior.

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