Match column A (layers in the ionosphere for skywave propagation) with column B (their height range).
Column A Column B
(I) D-layer (a) $250 - 400$ km
(II) E-layer (b) $170 - 190$ km
(III) $F_{1}$ -layer (c) $95 - 120$ km
(IV) $F_{2}$ -layer (d) $65 - 75$ km

(a), (b), (c), (d)

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(d), (c), (a), (b)

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(d), (c), (b), (a)

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(c), (d), (a), (b)

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Solution

The correct option is D (d), (c), (b), (a)
Height Ranges of different layers in ionosphere is listed below:
D-layer: 60-90 km
E-layer: 90-150 km
$F_{1}$ layer: 150-220 km
$F_{2}$ layer: 220-800 km

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Column A	Column B
(I) D-layer	(a) $250 - 400$ km
(II) E-layer	(b) $170 - 190$ km
(III) $F_{1}$ -layer	(c) $95 - 120$ km
(IV) $F_{2}$ -layer	(d) $65 - 75$ km

Match column A (layers in the ionosphere for skywave propagation) with column B (their height range).Column AColumn B(I) D-layer(a) 250−400km(II) E-layer(b) 170−190km(III) F1-layer(c) 95−120km(IV) F2-layer(d) 65−75km

The correct option is D (d), (c), (b), (a)Height Ranges of different layers in ionosphere is listed below:D-layer: 60-90 kmE-layer: 90-150 kmF1 layer: 150-220 kmF2 layer: 220-800 km

Match column A (layers in the ionosphere for skywave propagation) with column B (their height range).
Column A Column B
(I) D-layer (a) $250 - 400$ km
(II) E-layer (b) $170 - 190$ km
(III) $F_{1}$ -layer (c) $95 - 120$ km
(IV) $F_{2}$ -layer (d) $65 - 75$ km

The correct option is D (d), (c), (b), (a)
Height Ranges of different layers in ionosphere is listed below:
D-layer: 60-90 km
E-layer: 90-150 km
$F_{1}$ layer: 150-220 km
$F_{2}$ layer: 220-800 km