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- Light is reflected from all surfaces. It is a form of energy. Objects that give out light on their own are called luminous objects. Objects that do not give out light on their own are called non-luminous objects. They just reflect light that falls on them. When light reflected from an object enters into our eyes, the object becomes visible to us.
physicsgurukul.com/2023/09/10/revision-notes-for-class-8-science-chapter-16-light/
Light is the energy that enables us to see. Light is emitted from a source such as the Sun. The word usually refers to visible light, which is visible to the human eye and is responsible for the sense of sight. How do we see objects? Our eyes alone do not allow us to see.
Dec 7, 2022 · Light has the properties of waves. Like ocean waves, light waves have crests and troughs. The distance between one crest and the next, which is the same as the distance between one trough and the next, is called the wavelength .
Jan 24, 2024 · The light by which we can see an object may have been emitted by the object (if the object is luminous) or may have been reflected by the object (if the object is non-luminous). Light is reflected from all surfaces. Regular reflection takes place when light is incident on smooth, polished and regular surfaces.
- Figure 1 Light makes things Visible. What happens when light falls on a mirror? We know that light is a form of energy which is responsible for the sense of sight in the human eyes.
- Figure 2 Light falling on a mirror. The laws of reflection. What is the reflection of light?
- Figure 3 Reflection of Light. When light strikes a surface and bounces back, it is called reflection. Incident ray - The ray of light that falls on the surface is called incident ray.
- Figure 4 Formation of Image by Plane Mirror. Consider the figure given above. Here object AB of height ‘h’ is placed at a distance ‘u’ from the mirror. When the rays of light from this object fall on the mirror, the image of the object is formed inside the mirror.
Feb 19, 2019 · When light falls on an object, some part of the light is reflected back to our eyes. Then, we are able to see an object due to the light being reflected from it. Light is an electromagnetic wave that can travel through a medium (any substance including air, water, and glass) and vacuum.
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A transparent body allows almost all the light to pass through it and reflects very little light. A smooth and a highly polished surface such as a shiny stainless steel surface or a mirror reflect almost all the light that falls on it. Reflection of light on a plane surface.
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According to light chapter class 8 notes, visible light refers to the electromagnetic radiations which can be detected through human eyes.
