Mindmap: Ray Optics - Light: Reflection & Refraction

# Mindmap: Ray Optics - Light: Reflection & Refraction | Science Class 10 PDF Download

The document Mindmap: Ray Optics - Light: Reflection & Refraction | Science Class 10 is a part of the Class 10 Course Science Class 10.
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## Science Class 10

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## FAQs on Mindmap: Ray Optics - Light: Reflection & Refraction - Science Class 10

 1. What is ray optics and how does it relate to light?
Ans. Ray optics is a branch of optics that describes the behavior of light as rays. It focuses on the study of light propagation in straight lines, assuming that the wavelength of light is much smaller than the objects it interacts with. Ray optics helps us understand how light interacts with objects through reflection and refraction.
 2. What is the law of reflection?
Ans. The law of reflection states that the angle of incidence is equal to the angle of reflection. When a ray of light hits a smooth surface, it bounces off at the same angle it approached the surface. This law holds true for both plane mirrors and curved mirrors.
 3. How does refraction occur?
Ans. Refraction occurs when light passes from one medium to another, causing it to change direction. This change in direction is due to the change in the speed of light as it travels through different mediums. The bending of light at the interface of two mediums is governed by Snell's law, which relates the angles of incidence and refraction to the refractive indices of the two mediums.
 4. What is the difference between reflection and refraction?
Ans. Reflection is the bouncing back of light when it encounters a surface, while refraction is the bending of light as it passes from one medium to another. In reflection, the light remains in the same medium and changes direction, whereas in refraction, the light enters a different medium and changes both direction and speed.
 5. How does the shape of a lens affect the behavior of light?
Ans. The shape of a lens determines how it refracts light. Convex lenses, also known as converging lenses, focus light rays to a point and are thicker in the middle. Concave lenses, also known as diverging lenses, spread out light rays and are thinner in the middle. The shape of a lens affects its focal length, image formation, and the magnification of the object being viewed.

## Science Class 10

112 videos|427 docs|96 tests

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