Question

In a communication system, the bandwidth of a signal is:

• A. The difference between the highest and lowest frequencies
• B. The highest frequency only
• C. The lowest frequency only
• D. The sum of the highest and lowest frequencies

Hint:

Bandwidth is critical in communication systems as it determines how much information can be transmitted within a specific frequency range.

Answer 1

The Correct Option is A

In a communication system, the bandwidth refers to the range of frequencies that a signal occupies. It is defined as the difference between the highest and the lowest frequencies present in the signal. 
Step 1: Understanding Bandwidth.
Bandwidth represents the range of frequencies a signal occupies and is essential in determining the data transmission rate of the communication system. 
Step 2: Examining the Options.
(a) The difference between the highest and lowest frequencies: This is the correct definition of bandwidth.
(b) The highest frequency only: Bandwidth considers the range, not just the highest frequency.
(c) The lowest frequency only: Bandwidth involves both the highest and the lowest frequencies.
(d) The sum of the highest and lowest frequencies: Bandwidth is the difference, not the sum of frequencies. 
Step 3: Conclusion. 
The correct definition of bandwidth is the difference between the highest and lowest frequencies. Thus, the correct answer is (a) The difference between the highest and lowest frequencies.