Mindmap: Ray Optics and Optical Instruments

# Mindmap: Ray Optics and Optical Instruments | Physics Class 12 - NEET PDF Download

The document Mindmap: Ray Optics and Optical Instruments | Physics Class 12 - NEET is a part of the NEET Course Physics Class 12.
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## Physics Class 12

105 videos|425 docs|114 tests

## FAQs on Mindmap: Ray Optics and Optical Instruments - Physics Class 12 - NEET

 1. What is the difference between reflection and refraction in ray optics?
Ans. Reflection is the process of bouncing back of light when it strikes the surface of an object, while refraction is the bending of light as it passes from one medium to another.
 2. How does a convex lens form an image?
Ans. A convex lens converges the incoming light rays and forms a real and inverted image when the object is placed beyond the focal point of the lens.
 3. What is the purpose of using a concave mirror in optical instruments?
Ans. A concave mirror is used in optical instruments such as telescopes and microscopes to magnify the image of the object. It converges the light rays and forms an enlarged virtual image.
 4. How can we determine the focal length of a convex lens?
Ans. The focal length of a convex lens can be determined by placing an object at a known distance from the lens and measuring the distance between the lens and the position where a sharp image is formed.
 5. How does the human eye function as an optical instrument?
Ans. The human eye functions as an optical instrument by allowing light to enter through the cornea and lens, which converge the light rays to form an image on the retina. The retina then converts the light into electrical signals that are sent to the brain for processing and interpretation.

## Physics Class 12

105 videos|425 docs|114 tests

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