Loss of strength of a signal is known as

Options

A. Nolse
B. Attenuation
C. Modulation
D. De-modulation

Answer

To solve the question "Loss of strength of a signal is known as," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Options**: The question provides four options: noise, attenuation, modulation, and demodulation. We need to evaluate each option to find the correct answer.

2. **Define Noise**: Noise refers to any unwanted signal that interferes with the desired signal. It does not specifically relate to the loss of strength of a signal.

3. **Define Attenuation**: Attenuation is defined as the reduction in the strength of a signal. This directly relates to the loss of signal strength, making it a strong candidate for the answer.

4. **Define Modulation**: Modulation is the process of transmitting an information signal using a high-frequency carrier signal. It involves altering the carrier signal to encode the information but does not pertain to signal strength.

5. **Define Demodulation**: Demodulation is the reverse process of modulation, where the original information signal is extracted from the modulated carrier wave. Like modulation, it does not relate to the loss of signal strength.

6. **Identify the Correct Answer**: Based on the definitions, the term that best describes the loss of strength of a signal is "attenuation."

### Final Answer:
The loss of strength of a signal is known as **attenuation**.

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