Home
Class 12
PHYSICS
A: Transducer in communication system co...

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.

Text Solution

AI Generated Solution

The correct Answer is:
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.** ---
Promotional Banner

Similar Questions

Explore conceptually related problems

An audio signal of 15 kHz frequency cannot be transmitted over long distance without modulation because.

An audio signal of 15 kHz frequency cannot be transmitted over long distance without modulation because.

An audio signal of 15 kHz frequency cannot be transmitted over long distance without modulation because.

A: Optical communication system is more economical than other system of communications. R: The information carrying capacity of a communication system is directly proportional to its band width.

(A) : In a communication system based on amplitude modulation the modulation index is kept less than 1 (R) : If modulation index is less than 1, there is minimum distortion of signal