A: Transducer in communication system converts electrical singal into a physical quantity.
R: For information signal to be transmitted directly to long distances, modulation is not a necessary process.

Answer

To solve the assertion and reason question, we will analyze both statements step by step.

### Step 1: Analyze the Assertion
**Assertion (A):** "Transducer in a communication system converts electrical signal into a physical quantity."

- A transducer is indeed a device that converts energy from one form to another. In communication systems, transducers can convert electrical signals into various physical quantities such as sound (in microphones) or light (in optical fibers).
- Therefore, the assertion is **true** as it correctly describes the function of a transducer.

### Step 2: Analyze the Reason
**Reason (R):** "For information signal to be transmitted directly to long distances, modulation is not a necessary process."

- Modulation is a technique used to encode information onto a carrier wave for transmission over long distances. It allows the signal to be transmitted efficiently and helps avoid interference and distortion.
- Therefore, the reason is **false** because modulation is indeed necessary for transmitting information signals over long distances effectively.

### Step 3: Conclusion
- Since the assertion is true and the reason is false, we can conclude that the correct answer is that the assertion is true, but the reason is false.

### Final Answer
- The correct answer is: **Assertion is true, Reason is false.**

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