Analyzing the Physical Phenomenon and Discoverer Matching Question

The question asks us to identify which pairs of physical phenomena or discoveries are correctly matched with their discoverers from the given list. We are provided with three pairs involving James Chadwick, Albert Einstein, and Marie Curie, matched with the Photoelectric Effect, Neutron, and Radium, respectively.

Let's examine each pair individually to determine its accuracy.

Detailed Analysis of Each Discoverer and Discovery

Let's look closer at the contributions of the scientists mentioned:

• James Chadwick: A British physicist who was awarded the Nobel Prize in Physics in 1935 for his discovery of the neutron in 1932. The neutron is a subatomic particle with no net electric charge, found in the nucleus of atoms.
• Albert Einstein: A German-born theoretical physicist who developed the theory of relativity, one of the two pillars of modern physics. He is best known to the general public for his mass–energy equivalence formula E=mc^2. He received the 1921 Nobel Prize in Physics "for his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect". The photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material.
• Marie Curie: A Polish and naturalized-French physicist and chemist who conducted pioneering research on radioactivity. She was the first woman to win a Nobel Prize, the first person and only woman to win the Nobel Prize twice, and the only person to win the Nobel Prize in two different scientific fields. Along with her husband Pierre Curie, she discovered the elements polonium and radium. Radium is a radioactive metallic element found in uranium ore.

Based on these facts:

• Pair 1 matches James Chadwick with the Photoelectric Effect. This is incorrect; James Chadwick discovered the neutron.
• Pair 2 matches Albert Einstein with the Neutron. This is incorrect; Albert Einstein explained the Photoelectric Effect, and James Chadwick discovered the neutron.
• Pair 3 matches Marie Curie with Radium. This is correct; Marie Curie discovered radium.

Identifying the Correctly Matched Pair

From our analysis, only the third pair, connecting Marie Curie with the discovery of Radium, is correctly matched according to established scientific history.

Conclusion

Only the third pair (Marie Curie & Radium) is correctly matched. Therefore, the correct answer corresponds to the option that includes only pair 3.

The correct option states that only 3 is correct.

Revision Table: Scientists and Discoveries

Additional Information on Related Concepts

Neutron: The discovery of the neutron by James Chadwick was a pivotal moment in nuclear physics. Neutrons are fundamental particles in the nucleus of an atom, and their discovery helped explain isotopes and paved the way for understanding nuclear reactions and developing nuclear technology.

Photoelectric Effect: This phenomenon is crucial in understanding the quantum nature of light. Einstein's explanation, using Planck's quantum hypothesis, showed that light energy is quantized into packets called photons. This work was fundamental to the development of quantum mechanics.

Radium and Radioactivity: Marie Curie's work on radium and radioactivity opened up entirely new fields of study. Radioactivity is the process by which an unstable atomic nucleus loses energy by emitting radiation. The isolation of radium was a monumental task that demonstrated the existence of highly radioactive elements and their potential uses in medicine and other fields, while also highlighting the dangers of radiation exposure.