Engineering
Physics
Photoelectric Effect Einsteins Equation
Question

Match List – I (Fundamental Experiment) with List – II (its conclusion) and select the correct option from the choices given below the list :

List-I List-II
(A) Franck-Hertz Experiment. (i) Particle nature of light
(B) Photo-electric experiment. (ii) Discrete energy levels of atom
(C) Davison-Germer Experiment (iii) Wave nature of electron
  (iv) Structure of atom

 

(A) → (i)

(B) → (iv)

(C) → (iii)

(A) → (ii)

(B) → (i)

(C) → (iii)

(A) → (iv)

(B) → (iii)

(C) → (ii)

(A) → (ii)

(B) → (iv)

(C) → (iii)

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Solution

The Franck-Hertz experiment demonstrated that atoms absorb energy in discrete quanta, proving (A) → (ii) Discrete energy levels of atom.

The Photoelectric effect, explained by Einstein, showed that light behaves as particles (photons), proving (B) → (i) Particle nature of light.

The Davisson-Germer experiment confirmed de Broglie's hypothesis by observing electron diffraction, proving (C) → (iii) Wave nature of electron.

Therefore, the correct matching is: (A) → (ii), (B) → (i), (C) → (iii).