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MHT CET Physics question

PhysicsSemiconductor ElectronicsMHT CET

Not in JEE Advanced syllabus

A p-type semiconductor is i) a silicon crystal doped with arsenic impurity ii) a silicon crystal doped with aluminium impurity iii) a germanium crystal doped with boron impurity iv) a germanium crystal doped with phosphorus impurity

Answer: (B)

Solution

Aluminium and boron are trivalent acceptors, so (ii) and (iii) give p-type; arsenic and

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Question ID VK-085131