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  1. Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit

    2. A.

     X-rays
    B.

     ultraviolet light
    C.

     visible light
    D.

     radio waves

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    Answer : Option C

    Explanation :

    Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit visible light.

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