AIIMS 2003
- Exam
- AIIMS
- Year
- 2003
- Subject
- Physics
- Chapter
- Communication System
AIIMS 2003 · Physics · Communication System
Assertion : Microwave communication is preferred over optical...
Assertion : Microwave communication is preferred over optical communication.
Reason : Microwaves provide large number of channels and bandwidth compared to optical signals.
Options
- Aif both assertion and reason are true and the reason is the correct explanation of the assertion
- Bif both assertion and reason are true and the reason is not the correct explanation of the assertion
- Cif assertion is true but reason is false
- Dif both assertion and reason are false statements.
Correct answer
D. if both assertion and reason are false statements.
Step-by-step solution
The quality of a communication system is determined by its information carrying capacity. The information carrying capacity is directly proportional to its bandwidth. The wider the bandwidth, the greater its information carrying capacity.
As the light frequencies used in optical fibre systems is much larger than the highest frequency microwave transmissions, so the bandwidth in case of optical communication systems is much larger than that in microwave communications. The bandwidth of the optical fibre systems is quite suitable for the present day communication needs and also for the future. That's why optical communication is preferred over microwave communication.