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A Diode Laser

(a) used to measure light energy

(b) converts photon energy to electricity

(c) electron excitation results in generation of light

(d) Photon exitation result in change in reverse saturation current

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In a Diode Laser electrons are excited by a bias voltage which results in generation of light or high energy beam.
hence c is correct answer
answered Jan 31, 2014 by meena.p
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