Assertion (A) : Because of the Sun's UV radiation, Earth's

Home » Physical Geography » Atmosphare » Question

Assertion (A) : Because of the Sun's UV radiation, Earth's upper atmosphere is partly (0.1% or less) ionized plasma at altitudes of 70-1500 km.
Reason (R) : This region, ionosphere, is coupled to both the magnetosphere and the neutral atmosphere.

1. If (A) and (R) are true and (R) is the correct explanation of (A)
2. If (A) and (R) are true but (R) is not the correct explanation of (A)
3. If (A) is true but (R) is false
4. If (A) is false but (R) is true

Correct Option: B

NA