Home
Class 12
PHYSICS
Statement-1:Noise reduction is possible ...

Statement-1:Noise reduction is possible in frequency modulation (FM) while it is not feasible in AM
STATEMENT-2 In FM, amplitude of transmitted signal remains constant

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 given in the question, we need to break down the concepts of Frequency Modulation (FM) and Amplitude Modulation (AM) and how they relate to noise reduction. ### Step-by-Step Solution: 1. **Understanding Statement 1**: - **Statement**: Noise reduction is possible in frequency modulation (FM) while it is not feasible in amplitude modulation (AM). - **Explanation**: In FM, the information is encoded in the frequency variations of the carrier wave, while the amplitude remains constant. This means that external noise, which typically affects amplitude, has less impact on the FM signal. In contrast, in AM, the information is encoded in the amplitude of the carrier wave, making it more susceptible to noise that can distort the signal. 2. **Understanding Statement 2**: - **Statement**: In FM, the amplitude of the transmitted signal remains constant. - **Explanation**: This is a fundamental characteristic of FM. The frequency of the carrier wave changes according to the input signal, but the amplitude does not change. This constant amplitude helps in reducing the effect of noise, as noise primarily affects amplitude. 3. **Evaluating the Truth of Statements**: - **Statement 1** is true because FM is less affected by noise compared to AM due to its constant amplitude. - **Statement 2** is also true as it accurately describes the nature of FM where the amplitude remains constant. 4. **Conclusion**: - Since both statements are true and Statement 2 provides a correct explanation for Statement 1, we conclude that the correct option is that both statements are true and Statement 2 is a correct explanation of Statement 1. ### Final Answer: Both Statement 1 and Statement 2 are true, and Statement 2 is the 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. The transmission using FM is more efficient as compared to AM STATEMENT-2: In FM, amplitude and therefore power handled is constant

Both amplitude modulation (AM) and frequency modulation (FM) are used for radio broadcasting. The amplitude of the high frequency carrier wave is varied or modulated in accordance with the variations in the amplitude of the audio signals that are to be transmitted, in te process of amplitude modulation in frequency modulation te amplitude of the carrier remains constant but its frequency is varied inn accordance withh the audio signal. Reception with AM signals is in general is affected by interference of various kinds ad elaborated equipment is required for FM broadcast. In india the radio signals are boarcast using-

Both amplitude modulation (AM) and frequency modulation (FM) are used for radio broadcasting. The amplitude of the high frequency carrier wave is varied or modulated in accordance with the variations in the amplitude of the audio signals that are to be transmitted, in te process of amplitude modulation in frequency modulation te amplitude of the carrier remains constant but its frequency is varied inn accordance withh the audio signal. Reception with AM signals is in general is affected by interference of various kinds ad elaborated equipment is required for FM broadcast. The rangeof a transmitter is

Define frequency modulation and state any one advantage of frequency modulation (FM) over amplitude modulation (AM).

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 : The energy is increased because the amplitude is increased . and STATEMENT-2 : The amplitude is increased because energy is increased.

Statement-1: Two separate sources of light giving out light of the same frequency do not produce sustained interference. Statement-2 : The amplitude of the waves from the sources are never equal.

STATEMENT.1 Photo-omission from a photosensitive surface is possible only if the incident radiation has a frequency above threshold frequency. STATEMENT-2: Unless, the energy of incident photo is greater than the work function of photo- sensitive surface, no photoemission is possible.

Each question contains STATEMENT-1 (Assertion) and STATEMENT-2( Reason). Examine the statements carefully and mark the correct answer according to the instruction given below: STATEMENT-1: For the reaction at certain temperature A(g)+B(g) iff C(g) there will be no effect by addition of inert gas at constant volume. STATEMENT-2: Molar concentration of all gases remains constant.

A: The bandwidth of a modulated signal is 2f_(m) in amplitude modulation, where f_(m) is the frequency of the modulating signal. R: In case of amplitude modulation the frequency of a modulated signal is equal to the frequency of the carrier wave.