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1. Assertion (A): Electron concentration n, hole concentration p and charge concentration ni are related by ni2 = np.Reason (R): p type semiconductor is obtained by adding trivalent impurity to intrinsic semiconductor.
(A): A is false but R is true
(B): A is true but R is false
(C): Both A and R are true and R is correct explanation of A
(D): Both A and R are true but R is not correct explanation of A
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