Directions : In the following questions, A statement of Assertion (A) ...
Silicon is preferred over Germanium for making semiconductor devices. The assertion is true.
The energy gap of Germanium is about 0.7 eV, where as the energy gap of Silicon is 1.1 eV. Hence, the reason is false.
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Directions : In the following questions, A statement of Assertion (A) ...
Assertion (A): Silicon is preferred over Germanium for making semiconductor devices.
Reason (R): The energy gap of Germanium is more than the energy gap of Silicon.
The correct answer is option B, which states that both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
Explanation:
Understanding the Assertion and Reason:
- The assertion states that silicon is preferred over germanium for making semiconductor devices.
- The reason given to support this assertion is that the energy gap of germanium is more than the energy gap of silicon.
Explanation of Assertion:
- Silicon is preferred over germanium for making semiconductor devices due to several reasons.
- One of the main reasons is that silicon has a higher melting point than germanium, making it more suitable for high-temperature applications.
- Additionally, silicon has better thermal stability and is less prone to thermal runaway compared to germanium.
- Silicon also has a wider operating temperature range, allowing it to function reliably in various environments.
- Moreover, silicon has a higher breakdown voltage, making it more suitable for power devices.
- Silicon is also more abundant and less expensive than germanium, making it a more economically viable option for large-scale production.
Explanation of Reason:
- The reason provided in the statement is not the correct explanation for the assertion.
- The energy gap of a semiconductor material determines its electrical conductivity and other properties.
- The energy gap of germanium is indeed less than the energy gap of silicon.
- However, this difference in energy gap alone is not the primary reason why silicon is preferred over germanium for making semiconductor devices.
Conclusion:
- While the energy gap of germanium is indeed more than the energy gap of silicon, it is not the correct explanation for why silicon is preferred over germanium for making semiconductor devices.
- The preference for silicon is based on its superior thermal properties, wider operating temperature range, higher breakdown voltage, abundance, and affordability compared to germanium.