Home
Class 12
PHYSICS
STATEMENT-1 Communication in optical ran...

STATEMENT-1 Communication in optical range of frequency allows a large number of channels to be transmitted simultaneously
STATEMENT-2 : The bandwidth availability is directly proportional to frequency of carrier wave

A

Statement-1 is True. Statement-2 is True
Statement-2 is a correct explanation for statement-1

B

Statement is True Statement-2 is True
Statement-2 is NOT a correct explanation for Statement-1

C

Statement-1 Is True Statement-2 is False

D

Statement-1 is False. Statement 2 is True

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the statements provided in the question, we can break down the reasoning step by step. ### Step 1: Understanding Statement 1 **Statement 1:** "Communication in optical range of frequency allows a large number of channels to be transmitted simultaneously." **Explanation:** - Optical communication utilizes light waves, which operate at very high frequencies (in the terahertz range, approximately \(10^{12}\) Hz). - The high frequency allows for a greater bandwidth, which means that more information can be transmitted at once. - In optical fibers, multiple channels can be transmitted simultaneously due to the high frequency and the ability to use techniques such as wavelength division multiplexing (WDM). ### Step 2: Understanding Statement 2 **Statement 2:** "The bandwidth availability is directly proportional to the frequency of the carrier wave." **Explanation:** - Bandwidth refers to the range of frequencies that can be used for transmitting information. - Generally, higher frequencies allow for a larger bandwidth. This is because the capacity to carry information increases with frequency. - For example, in radio communications, as the frequency increases (like from UHF to FM), the number of channels and the bandwidth also increase. ### Step 3: Evaluating the Relationship Between the Two Statements - Statement 1 is true because optical communication indeed allows for many channels due to its high frequency. - Statement 2 is also true as it correctly describes the relationship between frequency and bandwidth availability. - Furthermore, Statement 2 provides a valid explanation for Statement 1, as the high frequencies in optical communication lead to increased bandwidth, thus allowing more channels. ### Conclusion Both statements are true, and Statement 2 correctly explains Statement 1. ### Final Answer - **Statement 1 is true.** - **Statement 2 is true.** - **Statement 2 is a correct explanation of Statement 1.**
Promotional Banner

Topper's Solved these Questions

  • COMMUNICATION SYSTEMS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION C (Linked Comprehension)|4 Videos

  • ATOMS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION J (Aakash Challengers )|5 Videos

  • CURRENT ELECTRICITY

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION-J|10 Videos

Similar Questions

Explore conceptually related problems

STATEMENT-1: In amplitude modulation, the frequency of amplitude variation is much smaller than the frequency of modulated wave STATEMENT-2 : Frequency of the signal is much smaller than the frequency of the carrier wave

STATEMENT-1 : Henry's law and Raoult's law are not independent, i.e., one can be derived from the other and STATEMENT-2 : The partial pressure is directly proportional to the mole fraction of concerned species for ideal solutions.

STATEMENT-1 : As the drift velocity increases, the current flowing through the conductor decreases, and STATEMENT-2 : The current flowing through a conductor is directly proportional to drift velocity.

STATEMENT-1 : The frezing point of 0.05 M urea solution is different from that of 0.05 M sodium chloride solution. STATEMENT-2 : The dpression in freezing point is directly proportional to the number of species present in the solution.

STATEMENT-1 : Plot of P vs 1/V (volume) is a straight line for an ideal gas. STATEMENT-2 : Pressure is directly proportional to volume for an ideal gas.

STATEMENT-1: Lenz's law is based on the principle of conservation of energy. Because STATEMENT-2: The magnitude of the induced emf is directly proportional to the rate of change of the magnetic flux.

Two ammeters are made from exactly similar galvanometers. STATEMENT-1 : The ammeter with higher range will be the one with lower resistance. and STATEMENT-2 : The shunt resistance to be connected in parallel is inversely proportional to maximum current to be measured.

Each question contains STATEMENT-I(Assertion) and STATEMENT-2(Reason).the statement carefully and mark the correct answer according to the instruction given below: STATEMENT - 1 : The boiling point of 0.1 M urea solution is less than that of 0.1 M KClsolution. STATEMENT - 2 : Elevation of boiling point is directly proportional to the number of moles of non-volatile solute particles present in the solution.

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

STATEMENT 1 : The audio frequency signals (20 Hz to 20 kHz) cannot be transmitted without distortion over long distances STATEMENT-2: Noise has its greatest effect when the signal is weak