Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main202118 Mar 2021Morning ShiftPhysicsCommunication SystemActual

Match List – I with List – II . List – I List – II (a) 10 km height over earth's surface (i) Thermosphere (b) 70 km height over earth's surface (ii) Mesosphere (c) 180 km height over earth's surface (iii) Stratosphere (d) 270 km height over earth's surface (iv) Troposphere

Options

  1. A( a )-( iv ), ( b )-( iii ), ( c )-( ii ), ( d )-( i )
  2. B( a )-( i ), ( b )-( iv ), ( c )-( iii ), ( d )-( ii )
  3. C( a )-( iii ), ( b )-( ii ), ( c )-( i ), ( d )-( iv )
  4. D( a )-( ii ), ( b )-( i ), ( c )-( iv ), ( d )-( iii )

Correct answer

A. ( a )-( iv ), ( b )-( iii ), ( c )-( ii ), ( d )-( i )

Step-by-step solution

Order of atmosphere stratification from bottom Troposphere, stralospherre, Mesosphre, Thermosphere ( a ) → ( iv ) ( b ) → ( iii ) ( c ) → ( ii ) ( d ) → ( i )

Practice Communication System on Quantrex Academy →

More from Communication System

The height of transmitting antenna is 180 m and the height of the receiving antenna is 245 m . The maximum distance between them for satisfactory communication in line of sight wil 2023To radiate EM signal of wavelength λ with high efficiency, the antennas should have a minimum size equal to: 2023Match List-I with List-II List-I (Layer of atmosphere) List-II (Approximate height over earth's surface) ( A ) F 1 - Layer ( I ) 10 km B D - Layer II 170 - 190 km C Troposphere 2023The amplitude of 15 sin ( 1000 π t ) is modulated by 10 sin ( 4 π t ) signal. The amplitude modulated signal contains frequencies of A. 500 Hz B. 2 Hz C. 250 Hz D. 498 Hz 2023In satellite communication, the uplink frequency band used is: 2023A transmitting antenna is kept on the surface of the earth. The minimum height of receiving antenna required to receive the signal in line of sight at 4 km distance from it is x &# 2023A massage signal of frequency 3 kHz is used to modulate a carrier signal of frequency 1 . 5 MHz . The bandwidth of the amplitude modulated wave is 2023A carrier wave of amplitude 15 V is modulated by a sinusoidal base band signal of amplitude 3 V . The ratio of maximum amplitude to minimum amplitude in an amplitude modulated wave 2023 Full Communication System list All JEE Main PYQs