Statement-I : To be used as amplifier, the transistor in the common emitter confuration is preferred to the common base configuration.
Statement-II : In the common emitter, the signal is applied between emitter and base.

Options

A. If both Assertion `&` Reason are True `&` the Reason is a correct explanation of the Assertion.
B. If both Assertion `&` Reason are True but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion `&` Reason are False.

Answer

To analyze the statements provided in the question, we will break down each statement and evaluate their validity step by step.

### Step 1: Analyze Statement-I
**Statement-I:** "To be used as an amplifier, the transistor in the common emitter configuration is preferred to the common base configuration."

- The common emitter configuration is widely used in amplifiers because it provides significant voltage gain.
- In this configuration, the input signal is applied between the base and emitter, while the output is taken from the collector and emitter.
- The common emitter configuration has a higher input impedance and a lower output impedance compared to the common base configuration, which makes it more suitable for amplification purposes.
- Therefore, Statement-I is **True**.

### Step 2: Analyze Statement-II
**Statement-II:** "In the common emitter, the signal is applied between emitter and base."

- In the common emitter configuration, the input signal is indeed applied between the base and emitter.
- This is the standard way to operate a common emitter amplifier, where the base-emitter junction is forward-biased to allow current flow.
- Therefore, Statement-II is also **True**.

### Step 3: Conclusion
Now, we need to determine if Statement-I is correctly explained by Statement-II.

- While both statements are true, Statement-II does not provide a sufficient reason for why the common emitter configuration is preferred over the common base configuration as an amplifier.
- The preference is primarily due to the higher voltage gain and better impedance characteristics of the common emitter configuration, not merely because the signal is applied between the emitter and base.

### Final Answer
- **Statement-I is True.**
- **Statement-II is True.**
- However, Statement-II does not correctly explain Statement-I. Therefore, the conclusion is that both statements are true, but Statement-II is not a correct explanation for Statement-I.