The sound waves after being converted into electrical waves are not transmitted as such because-

Options

A. they travel with the speed of sound
B. the frequency is not constant
C. they are heavily absorbed by the atmosphere
D. the height of antenna has to be increased several times

Answer

To solve the question, we need to understand why sound waves, once converted into electrical signals, are not transmitted directly as electrical waves. Let's break it down step by step:

### Step 1: Understanding Sound Waves
- Sound waves are mechanical waves that require a medium (like air, water, or solids) to travel. They are vibrations of particles in the medium.

### Step 2: Conversion to Electrical Waves
- When sound waves are converted into electrical waves, this is typically done using a transducer (like a microphone). The sound waves create an electrical signal that represents the sound.

### Step 3: Transmission of Electrical Waves
- Electrical waves can be transmitted through various mediums, but they behave differently than sound waves.

### Step 4: Absorption by the Atmosphere
- One of the main issues with transmitting electrical waves (especially at audio frequencies) through the atmosphere is that they can be heavily absorbed. This means that the energy of the electrical signal can dissipate quickly, making it ineffective for long-distance transmission.

### Step 5: Conclusion
- Therefore, the correct reason why electrical waves (converted from sound) are not transmitted as such is that they are heavily absorbed by the atmosphere.

### Final Answer
- The sound waves after being converted into electrical waves are not transmitted as such because they are heavily absorbed by the atmosphere.

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