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Assertion :-(A) semiconductors are so...

Assertion :-(A) semiconductors are solids with conductivites in the intermediate range from`10^(-6)-10^(4) ohm ^(-1)m^(-1)`
Reason :-(R ) internmediate conductivity in semiconductor Is due to partially filled valence band .

A

Assertion and reason both are corrent statements and reason is correct explanation for assertion.

B

Assertion and reason both are corrent statements but reason is not correct explanation for assertion.

C

Assertion is corrent statement but reason reason is wrong statement.

D

Assertion is wrong statement but reason is correct statement.

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To solve the question, we need to analyze the assertion and reason given in the problem step by step. ### Step 1: Understand the Assertion The assertion states that "semiconductors are solids with conductivities in the intermediate range from \(10^{-6}\) to \(10^{4} \, \text{ohm}^{-1}\text{m}^{-1}\)." **Analysis**: - This statement is true. Semiconductors have conductivities that fall between those of conductors (like metals) and insulators (like rubber). Their conductivity can vary widely based on temperature and impurities. ### Step 2: Understand the Reason The reason states that "intermediate conductivity in semiconductors is due to partially filled valence band." **Analysis**: - This statement is incorrect. In semiconductors, the conductivity arises from the ability of electrons to jump from the valence band to the conduction band, which is typically due to a small energy gap (band gap) between these bands. The valence band is usually fully filled, and it is the conduction band that is partially filled when electrons are excited. ### Step 3: Determine the Relationship Between Assertion and Reason Now we need to determine if the reason correctly explains the assertion. - Since the assertion is true but the reason is false, the relationship is not valid. ### Conclusion Based on the analysis: - The assertion is true. - The reason is false. Thus, the correct option is: **Assertion is correct, but Reason is wrong. (Option C)** ---
To solve the question, we need to analyze the assertion and reason given in the problem step by step. ### Step 1: Understand the Assertion The assertion states that "semiconductors are solids with conductivities in the intermediate range from \(10^{-6}\) to \(10^{4} \, \text{ohm}^{-1}\text{m}^{-1}\)." **Analysis**: - This statement is true. Semiconductors have conductivities that fall between those of conductors (like metals) and insulators (like rubber). Their conductivity can vary widely based on temperature and impurities. ...
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