notes for light chapter
Answers
Explanation:
Introduction to Light – Reflection & Refraction
Light: Definition
Light is a form of energy that enables us to see things. Light starts from a source and bounces off objects which are perceived by our eyes and our brain processes this signal, which eventually enables us to see.
Nature of Light
Light behaves as a:
ray, e.g. reflection
wave, e.g. interference and diffraction
particle, e.g. photoelectric effect
Laws of Reflection
Light incident on another medium
When light travels from one medium to another medium it either:
gets absorbed (absorption)
bounces back (reflection)
passes through or bends (refraction)
When light is incident on a plane mirror, most of it gets reflected, and some of it gets absorbed in the medium.
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