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statement1:To make p type semiconductor ...

statement1:To make p type semiconductor , pentavalent impurity like phosphorus is mixed with Si.
statement2: Pentavalent impurity produces free electrons.

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To analyze the given statements about semiconductors, let's break down the information step by step. ### Step 1: Understanding P-Type and N-Type Semiconductors - A **p-type semiconductor** is formed by doping a semiconductor material (like silicon) with a **trivalent impurity** (like boron), which has three valence electrons. This creates "holes" or positive charge carriers. - An **n-type semiconductor** is formed by doping with a **pentavalent impurity** (like phosphorus), which has five valence electrons. This results in extra electrons that act as negative charge carriers. ### Step 2: Evaluating Statement 1 - **Statement 1**: "To make p-type semiconductor, pentavalent impurity like phosphorus is mixed with Si." - This statement is **incorrect** because phosphorus is a pentavalent impurity that creates an n-type semiconductor, not a p-type semiconductor. P-type semiconductors require trivalent impurities. ### Step 3: Evaluating Statement 2 - **Statement 2**: "Pentavalent impurity produces free electrons." - This statement is **correct** because when a pentavalent impurity like phosphorus is added to silicon, it contributes one extra electron per atom, which becomes a free electron in the conduction band. ### Conclusion - **Statement 1** is false. - **Statement 2** is true. ### Final Answer The correct option is that **Statement 1 is false and Statement 2 is true**. ---
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