The radio waves of frequency 30 MHz to 3...

The radio waves of frequency 30 MHz to 300 MHz belong to

high frequency band

very high frequency band

ultra high frequency band

super high frequency band

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A plane electromagnetic wave of frequency 20 MHz travels through a space along x-direction. If the electric field vector at a certain point in space is 6 Vm^(-1) ,then what is the magnetic field vector at that point?

A plane electromagnetic wave of frequency 25 MHz travels in free space along the x-direction. At a particular point in space and time, vec(E)=6.3hat(j)V//m . What is B at this point ?

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Two radio transmitters radiating in phase are located at point A and B, 250 m apart. The ratio wave have frequency of 3MHz. A radio receiver is moved out from point B along a line BC (perpendicular to AB). The distance from B beyond which the detector does not detect any minima si :

Give (brief) reasons for the following : (a) We use 'sky wave' mode of propagation of electromagnetic waves, only for frequencies upto 30 to 40 MHz. (b) The LOS communication, via space waves, has a (fairly) limited range. (c) A mobile phone user gets uninterrupted link to talk while walking.

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The ground wave propagation is suitable for radio waves of frequency
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The sky wave propagation is suitable for radiowaves of frequency
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The radio waves of frequency 30 MHz to 300 MHz belong to
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The electromagnetic waves of frequency range 100 to 300 GHz are used i...
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Space wave propagation is used in (a) microwave communication (b) ...
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The electromagnetic waves of frequency 80 MHz and 200 MHz
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The air of earth's atmosphere responsible for absorbing a large port...
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A TV tower has a height of 150 m. The area of the region covered by th...
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What does the MODEM do?
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Of the following which is preferred modulation scheme for digital comm...
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What is the radiowaves signal called if it propagates from one place t...
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Three waves A,B and C of frequencies 1600 kHz, 5 MHz and 60 MHz, respe...
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Which of the following frequencies will be suitable for beyond the hor...
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Frequencies in the UHF range normally propagate by means of
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Digital signals (i) do not provide a continuous set of values. (ii...
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