Which branch of physics is most likely to study the properties of light?quantum mechanicselectromagnetismthermodynamicsoptics

To determine which branch of physics is most likely to study the properties of light, we can analyze the four given options:

1. Quantum Mechanics: This branch studies the behavior of matter and light at very small scales, such as atoms and subatomic particles. While it does encompass some study of light, it is not specifically focused on light properties.

2. Electromagnetism: This field deals with electric and magnetic fields and their interactions with charged particles. Light is an electromagnetic wave; hence, electromagnetism is essential for understanding wave properties of light.

3. Thermodynamics: This branch focuses on the relationships between heat and other forms of energy. It does not primarily concern itself with the properties of light.

4. Optics: This branch of physics is specifically dedicated to studying light, its properties, how it interacts with matter, and its behavior when it is reflected, refracted, or diffracted.

Final Answer

The branch of physics most likely to study the properties of light is optics.