Match List-$I$ with List-$II$:
List-$I$ List-$II$
$A$. Troposphere $I$. Approximate $65-75 \ km$ over Earth's surface
$B$. $E$-Part of Ionosphere $II$. Approximate $300 \ km$ over Earth's surface
$C$. $F_2$-Part of Ionosphere $III$. Approximate $10 \ km$ over Earth's surface
$D$. $D$-Part of Ionosphere $IV$. Approximate $100 \ km$ over Earth's surface

Choose the correct answer from the options given below:

  • A
    $A-III, B-IV, C-II, D-I$
  • B
    $A-I, B-II, C-IV, D-III$
  • C
    $A-I, B-IV, C-III, D-II$
  • D
    $A-III, B-II, C-I, D-IV$

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Similar Questions

The audio signal used to modulate $60 \sin(2\pi \times 10^6 t)$ is $15 \sin(300\pi t)$. The depth of modulation is.......$\%$

In an $AM$ wave,the frequencies of $LSB$ and $USB$ are $2.99 \ MHz$ and $3.01 \ MHz$ respectively. The carrier frequency is ....... and the modulating frequency is .......

Match Column $A$ (layers in the ionosphere for skywave propagation) with Column $B$ (their height range).
Column $A$Column $B$
$A$. $D$-layer$I$. $250-400 \ km$
$B$. $E$-layer$II$. $170-190 \ km$
$C$. $F_1$-layer$III$. $95-120 \ km$
$D$. $F_2$-layer$IV$. $65-75 \ km$

$A$ transmitting antenna has a height of $320\, m$ and that of the receiving antenna is $2000\, m$. The maximum distance between them for satisfactory communication in line-of-sight mode is $d$. The value of $d$ is $\ldots \ldots \, km$.

Match 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 $(III)$ $100\,km$
$(D)$ $E$-Layer $(IV)$ $65-75\,km$

Choose the correct answer from the options given below:

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