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Assertion : In a semiconductor, the cond...

Assertion : In a semiconductor, the conduction electrons have a higher mobility than holes.
Reason: The electrons experience fewer collisions.

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 analyze the assertion and reason provided in the question, we can break down the statements step by step: ### Step 1: Understanding the Assertion The assertion states that "In a semiconductor, the conduction electrons have a higher mobility than holes." - **Mobility** refers to how quickly charge carriers (electrons and holes) can move through a semiconductor when an electric field is applied. - In semiconductors, conduction electrons (negatively charged) are indeed found to have higher mobility compared to holes (positively charged). ### Step 2: Understanding the Reason The reason given is "The electrons experience fewer collisions." - This statement suggests that electrons have a higher mobility because they encounter fewer collisions as they move through the semiconductor material. - However, this is a misleading statement. In reality, conduction electrons experience more collisions due to their higher energy and mobility, which allows them to move more freely and rapidly. ### Step 3: Evaluating the Assertion and Reason Now, we need to evaluate the truth of both the assertion and the reason: - The assertion is **true**: Conduction electrons do have higher mobility than holes. - The reason is **false**: Electrons do not experience fewer collisions; they actually experience more collisions due to their higher mobility. ### Conclusion Based on the analysis: - The assertion is true. - The reason is false. Thus, the correct conclusion is that the assertion is true, but the reason is incorrect. ### Final Answer Assertion: True Reason: False
To analyze the assertion and reason provided in the question, we can break down the statements step by step: ### Step 1: Understanding the Assertion The assertion states that "In a semiconductor, the conduction electrons have a higher mobility than holes." - **Mobility** refers to how quickly charge carriers (electrons and holes) can move through a semiconductor when an electric field is applied. - In semiconductors, conduction electrons (negatively charged) are indeed found to have higher mobility compared to holes (positively charged). ...
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