Ionization layer - E region limits

Q.  What is the possible range of height for the occurrence of sporadic E-region with respect to normal E-region?
- Published on 01 Oct 15

a. 20 km – 50 km
b. 45 km – 85 km
c. 90 km – 130 km
d. 140 km – 200 km

ANSWER: 90 km – 130 km

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