Match the column A and column B and mark the correct option.
| Column A | Column B |
| 1. Photoelectric effect | A. de Broglie |
| 2. Wave-particle duality | B. Roentgen |
| 3. X-rays | C. R. A. Millikan |
| 4. Quantized electric charge | D. Heinrich Hertz |
Answer & explanation
Correct answer: option 1
Photoelectric effect was discovered by Heinrich Hertz, wave-particle duality was discovered by de Broglie, X-rays was discovered by Roentgen and Millikan's experiment established the quantized electric charge.