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Optics (Lec - 4) - Electronics & Communication Engineering Video Lecture - Electronics and Communication Engineering (ECE)
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| 1. What is the principle of optics? |  |
Ans. The principle of optics involves the study of the behavior and properties of light. It focuses on how light interacts with different materials and objects, including reflection, refraction, diffraction, and interference.
| 2. How does reflection occur in optics? | |
Ans. Reflection in optics occurs when light rays bounce off a surface. It follows the law of reflection, which states that the incident angle (angle of the incoming light) is equal to the angle of reflection (angle of the outgoing light) with respect to the normal (perpendicular line) of the surface.
| 3. What is refraction in optics? | |
Ans. Refraction in optics refers to the bending of light rays as they pass from one medium to another with a different refractive index. It occurs due to the change in the speed of light, resulting in the change in direction. The amount of refraction depends on the angle of incidence and the refractive indices of the two media.
| 4. What is the difference between diffraction and interference in optics? | |
Ans. Diffraction in optics is the bending or spreading of light waves as they pass through an opening or around an obstacle. It occurs due to the wave nature of light. Interference, on the other hand, is the interaction of two or more light waves that combine to either reinforce (constructive interference) or cancel out (destructive interference) each other. Diffraction is a result of interference, but they are distinct phenomena.
| 5. How are optics applied in communication engineering? | |
Ans. Optics plays a crucial role in communication engineering, specifically in the field of fiber optics. Fiber optics use light signals to transmit data over long distances with minimal signal loss. The principles of reflection, refraction, and total internal reflection are utilized to guide and transmit light signals through optical fibers, enabling high-speed and high-bandwidth communication.
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Sep 20, 2024 Last updated |
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