Ratio of free electron density to hole d

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Target Exam

CUET

Subject

Physics

Chapter

Communication

Question:

Ratio of free electron density to hole density of a p-type semiconductor is

Options:

Equal to one

Less than one

Greater than one

Can be less than or greater than one depending upon semiconductor material

Correct Answer:

Less than one

Explanation:

In p-type semiconductors,holes are the majority carrier ,

so n_h > n_e

∴ $\frac{n_e}{n_h} < 1 $