NEET Physics Communication System Communication Systems MCQs

    Prepare for NEET Physics Communication System (Communication Systems) with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert guidance to understand signal modulation, transmission, and reception.

    NEET Questions / Physics / Communication System / Communication Systems

    Select Topic

    Communication Systems
    1.

    In a frequency modulated wave, the instantaneous frequency varies between 100.01 MHz and 99.99 MHz. If the audio signal frequency is 1 kHz, what is the frequency deviation?

    A

    1 kHz

    B

    5 kHz

    C

    10 kHz

    D

    20 kHz

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Communication System
    🎯Topic:Communication Systems
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Hard
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Communication Systems, Frequency Modulation, Frequency Deviation
    2.

    In frequency modulation, the amplitude of the carrier wave is:

    A

    Constant

    B

    Varied according to the message signal

    C

    Zero

    D

    Equal to the message signal amplitude

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Communication System
    🎯Topic:Communication Systems
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Frequency Modulation
    3.

    In satellite communication, the communication satellite;

    A

    Acts as a reflector for a beam of modulated microwave from transmitter sent directly towards it

    B

    Acts as a repeater for a signal reaching there, without any change in frequency

    C

    Receives the coming modulated microwave signal, amplifies it and returns it to earth at a different frequency

    D

    None of the above

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Communication System
    🎯Topic:Communication Systems
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Satellite communication, Microwave signal, Amplification, Frequency modulation
    4.

    The modulation index of a FM signal is 0.25. If modulating frequency is 2kHz, the maximum derivative in frequency would be

    A

    500 Hz

    B

    1000 Hz

    C

    1500 Hz

    D

    500 kHz

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Communication System
    🎯Topic:Communication Systems
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Frequency Modulation, Modulation Index, Frequency Deviation
    5.

    When Ο‰m{\omega _m} is the modulation frequency in frequency modulation, the modulation index is proportional to

    A

    Ο‰m{\omega _m}

    B

    Ο‰m2\omega _m^2

    C

    1/Ο‰m1/{\omega _m}

    D

    1/Ο‰m21/\omega _m^2

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Communication System
    🎯Topic:Communication Systems
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Frequency Modulation, Modulation Index
    6.

    When Ο‰m{\omega _m} is the modulation frequency in frequency modulation, the modulation index is proportional to

    A

    Ο‰m{\omega _m}

    B

    Ο‰m2\omega _m^2

    C

    1/Ο‰m1/{\omega _m}

    D

    1/Ο‰m21/\omega _m^2

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Communication System
    🎯Topic:Communication Systems
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Frequency Modulation, Modulation Index
    7.

    Which of the following is the disadvantage of FM over AM

    A

    Larger band width requirement

    B

    Larger noise

    C

    Higher modulation power

    D

    Low efficiency

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Communication System
    🎯Topic:Communication Systems
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Frequency Modulation (FM), Amplitude Modulation (AM), Bandwidth
    8.

    Which of the following is the disadvantage of FM over AM

    A

    Larger band width requirement

    B

    Larger noise

    C

    Higher modulation power

    D

    Low efficiency

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Communication System
    🎯Topic:Communication Systems
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Frequency Modulation (FM), Amplitude Modulation (AM), Bandwidth, Communication Systems
    9.

    In frequency modulation

    A

    The amplitude of modulated wave varies as frequency of carrier wave

    B

    The frequency of modulated wave varies as amplitude of modulating wave

    C

    The frequency of modulated wave varies as frequency of modulating wave

    D

    The frequency of modulated wave varies as frequency of carrier wave

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Communication System
    🎯Topic:Communication Systems
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Frequency Modulation, Carrier Wave, Modulating Wave, Amplitude, Frequency
    10.

    In frequency modulation

    A

    Modulation index = 0.5; Bandwidth = 60 kHz

    B

    Modulation index = 5; Bandwidth = 120 kHz

    C

    Modulation index = 50; Bandwidth = 1000 kHz

    D

    Modulation index = 2; Bandwidth = 20 kHz

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Communication System
    🎯Topic:Communication Systems
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Frequency Modulation, Modulation, Carrier Wave, Modulating Wave

    Showing 1 to 10 of 10 entries

    company logo

    NEET Subjects

    Our Bots

    Company