What is light (Acha to batao hum kaise dikhte hai kal isleye nahi aaye kyunki apni friends ke sath thi)
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Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that is perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 400–700 nanometres, between the infrared and the ultraviolet.
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