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NEET Practice Questions (MCQs) with Answers & Solutions

Practice free NEET NEET multiple-choice questions online with instant answers and detailed explanations. No login required.

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In light modulation, which charactristie of the carrier light wave is varied?

A. Amplitude B. Frequency C. Phase D. intensity

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Though which mode of communication can radiowaves be sent from one Plate to another?

A. Ground wave Propagation B. sky wave Propagation C. Space wave Propagation D. All of the above

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Which range of Frequencies is Suitable for sky wave Propagation ?

A. 1 KHz to 500 KHz B. 1 MHz to 2 MHz C. 2 MHz to 20 MHz D. Above 30 MHz

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Which of the Following is not a component of communication System ?

A. Transmitter B. Transmission channel C. Noise D. Receiver

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Device which transform one form of energy in to another form of energy is called a

A. Transducer B. Transformer C. Transponder D. Transistor

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________is a link between the transmitter and receiver

A. Microphone B. Transmission channel C. Transducer D. Telephone

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â€¦â€¦â€¦â€¦â€¦... in the receiver section are used to reduce the level of noise signal

A. Filter circuit B. Modulator C. Demoluator D. Amplifier

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The maniman distance a up to which T.V transmission from a T.V. tower of height h can be received is Proportional to

A. $ h^2$ B. h C. $ h^{3/2}$ D. $ h^2$

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The energy attenuation in optical fibre is mainly due to

A. absorption B. scattering C. both a and b D. neither absorption nor scattering

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The electromagnetic waves of frequency 2 MHz to 30 MHz are

A. in ground wave propagation B. in sky wave propagation C. in micro wave propagation D. in satellite communication

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