Home
Class 12
PHYSICS
Assertion: Microwave communication is pr...

Assertion: Microwave communication is preferred over optical communication.
Reason: Information carrying capacity is directly proportional to bandwidth.

A

If the both assertion and reason are true and the reason is the correct explanation of the assertion

B

If both assertion and reason are true and the reason is not the correct explanation of the assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false statements.

Text Solution

Verified by Experts

The correct Answer is:
D
The quantity of a communication system is determined by its information carrying capacity. The information carryin 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 communications. The bandwidth of the optical fibre system is quit suitable for the present day communication needs also for the future. Thats why optical communication is preferred over microwave communication.
Promotional Banner

Similar Questions

Explore conceptually related problems

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.

Optical fibre. communication is generally preferred over general communication system because

Assertion: Charge on all the condensers connected is series in the same. Reason : Capacitance of capacitor is directly proportional to charge on it.

Assertion : A screw gauge having a smaller value of pitch has greater accuracy. Reason : The least count of screw gauge is directly proportional to the number of divisions on circular scale.

(A) : Optical communication is preferred to microwave communication (R) : Microwaves provide large number of channels and bandwidth as compared to optical signals.

Assertion (A): Vapour pressure of 0.5 M sugar solution is more than 0.5 M KCl solution. Reason (R): Relative lowering of vapour pressure is directly proportional to the number of species present in the solution.

Assertion : When a thin transparent sheet is placed in front of both the slits of Young's experiment, the fringe width will remains same. Reason : In Young's experiment, the fringe width is directly proportional to wavelength of the source used.

Assertion: In a hydrogen atom energy of emitted photon corresponding to transition from n = 2 to n = 1 is such greater as compared to transition from n=oo to n = 2 . Reason: Wavelength of photon is directly proportional to the energy of emitted photon.

Assertion: Newton's second law of motion gives the measurement of force. Reason: According to Newton's second law of motion, force is directly proportional to the rate of change of momentum.