Thickest layer of the ionosphere is (1) D layer (2) E layer (3) F1

1.	Thickest layer of the ionosphere is (1) D layer (2) E layer (3) F1 layer (4) F2 layer
Answer» Correct option: (4) F2 layer Explanation: The approximate height of the four layers is as follows. D layer – 65–75 km E layer – 100 km F1 layer – 170–190 km F2 layer – 300 km (at night) and 250–400 km (during day)

Thickest layer of the ionosphere is (1) D layer (2) E layer (3) F1 layer (4) F2 layer

Answer»

Correct option: (4) F2 layer

Explanation:

The approximate height of the four layers is as follows.

D layer – 65–75 km

E layer – 100 km

F1 layer – 170–190 km

F2 layer – 300 km (at night) and 250–400 km (during day)