Match Column A (layers in the ionosphere for skywave propagation) with Column B (their height range)…

Match Column A (layers in the ionosphere for skywave propagation) with Column B (their height range)
$\begin{array}{llll}\mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D}\end{array}$
  1. $\begin{array}{llll}\text { I } & \text { II } & \text { III } & \text { IV }\end{array}$
  2. $\begin{array}{llll}\text { IV } & \text { III } & \text { I } & \text { II }\end{array}$
  3. $\begin{array}{llll}\text { IV } & \text { III } & \text { II } & \text { I }\end{array}$
  4. $\begin{array}{llll}\text { IIII } & \text { IV } & \text { I } & \text { II }\end{array}$

Solution

$\begin{aligned} & \text { D-layer - } 65-75 \mathrm{~km} \\ & \text { E-layer - } 95-120 \mathrm{~km} \\ & \mathrm{~F}_1 \text {-layer - } 170-190 \mathrm{~km} \\ & \mathrm{~F}_2 \text {-layer - } 250-400 \mathrm{~km}\end{aligned}$

Asked in: AP EAMCET 2012

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