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Assertion: The conductivity of an intrin...

Assertion: The conductivity of an intrinsic semiconductor depends on its temperature.
Reason The conductivity of an intrinsic semiconductor is slightly higher than that of a lightly doped p-type semiconductor.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true not but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false

D

If both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Analyze the Assertion The assertion states that "The conductivity of an intrinsic semiconductor depends on its temperature." - **Explanation**: Intrinsic semiconductors are pure semiconductors without any significant dopant atoms present. Their conductivity is primarily due to the thermal generation of electron-hole pairs. As temperature increases, more electron-hole pairs are generated, which increases the conductivity. Therefore, this assertion is **true**. ### Step 2: Analyze the Reason The reason states that "The conductivity of an intrinsic semiconductor is slightly higher than that of a lightly doped p-type semiconductor." - **Explanation**: Lightly doped p-type semiconductors have a small number of acceptor atoms, which can create holes that contribute to conductivity. Generally, the conductivity of a lightly doped p-type semiconductor is higher than that of an intrinsic semiconductor because the presence of dopants increases the number of charge carriers (holes). Thus, this reason is **false**. ### Step 3: Conclusion Based on the analysis: - The assertion is **true**. - The reason is **false**. Therefore, the correct conclusion is that the assertion is true, and the reason is false. ### Final Answer Assertion: True Reason: False

To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Analyze the Assertion The assertion states that "The conductivity of an intrinsic semiconductor depends on its temperature." - **Explanation**: Intrinsic semiconductors are pure semiconductors without any significant dopant atoms present. Their conductivity is primarily due to the thermal generation of electron-hole pairs. As temperature increases, more electron-hole pairs are generated, which increases the conductivity. Therefore, this assertion is **true**. ### Step 2: Analyze the Reason ...
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