Class 12 Exam > Class 12 Videos > Physics, Ray Optics, Microscope - Ray, Optics & Optical Instruments
Physics, Ray Optics, Microscope - Ray, Optics & Optical Instruments Video Lecture - Class 12
FAQs on Physics, Ray Optics, Microscope - Ray, Optics & Optical Instruments Video Lecture - Class 12
| 1. What is the concept of ray optics? |  |
Ans. Ray optics is a branch of physics that deals with the study of light and its behavior as it travels in straight lines called rays. It focuses on the principles and laws governing the propagation of light, reflection, refraction, and the formation of images using rays.
| 2. How does a microscope work based on the principles of ray optics? | |
Ans. A microscope works based on the principles of ray optics by using a combination of lenses to magnify small objects. The objective lens collects and magnifies the light from the object, forming a real image. This image is then further magnified by the eyepiece lens, allowing the viewer to see the object in greater detail.
| 3. What is the role of a lens in a microscope? | |
Ans. The lens in a microscope plays a crucial role in the magnification and formation of images. The objective lens collects light from the object, magnifies it, and forms a real image. The eyepiece lens then further magnifies this image, allowing the viewer to see it in greater detail.
| 4. How does refraction contribute to the working of a microscope? | |
Ans. Refraction plays a significant role in the working of a microscope. When light passes through different media with varying refractive indices, such as air and glass, it bends or changes direction. This bending of light rays allows the microscope lenses to focus and magnify the image of the object being observed.
| 5. What are some common applications of optical instruments in various fields? | |
Ans. Optical instruments find extensive applications in various fields such as medicine, astronomy, photography, and telecommunications. Some common examples include microscopes for medical research, telescopes for observing celestial objects, cameras for capturing images, and fiber optic cables for transmitting data over long distances.
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