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The ionosphere consists of the following...

The ionosphere consists of the following layer D, E, `F_1` and `F_2` . Which of these layers are present in the night time ?

A

1.D,E, `F_1`

B

2. E and `F_2`

C

3. D and `F_2`

D

4. D,`F_1, F_2`

Text Solution

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The correct Answer is:
B
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