Which of the following statements is/are correct? I. Pure Si doped ...

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Which of the following statements is/are correct?
I. Pure Si doped with trivalent impurities gives a p-type semiconductor
II. Majority carriers in a n-type semiconductor are holes
III. Minority carriers in a p-type semiconductor are electrons
IV. The resistance of intrinsic semiconductor decreases with increase of temperature
(a) I only
(b) I, III and IV
(c) I and IV
(d) II only
\( \mathrm{P} \)
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