Materials and Components
The resistance of a photoconductor

May increase or decrease with increase in light intensity
Decreases with increase in light intensity
Increases with increase in light intensity
Remains constant

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Materials and Components
At room temperature the number of conducting electrons in an intrinsic semiconductor

Is a very small fraction of the number of valence electrons
Is almost equal to the number of valence electrons
Is about half the number of valence electrons
Is small as compared to the number of valence electrons

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