Question

Define Optical mouse in short and simple language​

Answer 1

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An optical mouse is a computer mouse which uses a light source, typically a light-emitting diode (LED), and a light detector, such as an array of photodiodes, to detect movement relative to a surface. ... Optical mice that use dark field illumination can function reliably even on such surfaces.

Answer 2

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An optical mouse is a computer mouse which uses a light source, typically a light-emitting diode (LED), and a light detector, such as an array of photodiodes, to detect movement relative to a surface.

In simple words:-

It is the type of mouse that uses light to detect movement

Hope it helps.

thanks