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electronics and communication engineering materials and components
1. A sample of N type semiconductor has an electron density of 6.25 x 1018/cm3 at 300 K. If intrinsic concentration of carriers in this sample is 2.5 x 1013/cm3 at this temperature, the hole density is
(A): 1010 / cm3
(B): 1012 / cm3
(C): 106 / cm3
(D): 108 / cm3
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