define light according to 10th class
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the medium of illumination that makes sight possible. Also called: visible radiation electromagnetic radiation that is capable of causing a visual sensation and has wavelengths from about 380 to about 780 nanometres.
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Light★
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.
Light behaves as a:
- ray, e.g. reflection
- wave, e.g. interference and diffraction
- particle, e.g. photoelectric effect
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