What do the acronyms LASER and LED stands for? Name the factor which determines (i) frequency and (ii) intensity of light emitted by LED.
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LASER stands for light amplification by stimulated emission of Radiation. LED stands for light emitting diode. (i) The frequency of light emitted by an LED is related to the band gap of the semiconductor used in LED, i.e., a type of material used in making the LED. (ii) The intensity of light emitted by LED depends upon the doping level of the semiconductor used.
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