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Assertion : Free electrons inside a meta...

Assertion : Free electrons inside a metal are free to move out of the metal.
Reason : Free electrons inside conductor do not need additional energy to get out of the metal.

A

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

B

If both assertion and reason are true 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: "Free electrons inside a metal are free to move out of the metal." - **Explanation**: While it is true that free electrons can move within the metal, they cannot escape the metal without external energy. The electrons are bound to the metal by the attractive forces of the positive ions in the lattice structure of the metal. ### Step 2: Determine the Truth Value of the Assertion - **Conclusion**: The assertion is **false** because free electrons can move freely within the metal but cannot move out of the metal without additional energy. ### Step 3: Analyze the Reason The reason states: "Free electrons inside a conductor do not need additional energy to get out of the metal." - **Explanation**: This statement is also incorrect. To remove an electron from the metal, energy must be supplied to overcome the work function, which is the minimum energy required to free an electron from the attractive forces of the metal. ### Step 4: Determine the Truth Value of the Reason - **Conclusion**: The reason is also **false** because free electrons do require additional energy to escape from the metal due to the work function. ### Final Conclusion Both the assertion and the reason are false. ### Summary of the Solution 1. The assertion is false because free electrons can move within the metal but cannot escape without external energy. 2. The reason is false because free electrons require additional energy to overcome the work function to escape the metal.
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Analyze the Assertion The assertion states: "Free electrons inside a metal are free to move out of the metal." - **Explanation**: While it is true that free electrons can move within the metal, they cannot escape the metal without external energy. The electrons are bound to the metal by the attractive forces of the positive ions in the lattice structure of the metal. ### Step 2: Determine the Truth Value of the Assertion ...
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