The outer most layer of the Sun is known as---

Question

Question

This question was previously asked in

AFCAT Previous Year paper 4 (Held on: 23 February 2014)

Answer 1

The correct answer is option 1 i.e Corona.

Key Points

Corona is the outermost layer of the Sun.
- It experiences a very high temperature, about one million degrees Celcius.
- It starts at about 2100 km above the photosphere.
- Corona isn't visible from the earth (except during solar eclipse).
- The corona does not have an upper limit.
Photosphere, the Chromosphere, the Transition Region, and the Corona are the outer layers of the sun.
Granules on the sun's photosphere are due to the convection currents of plasma within the Sun's convective zone.

Important Points

Photosphere	The lower layer of the sun. It is the glowing surface of the sun. The visible part of the sun. The deepest layer of the Sun.
Chromosphere	Located between the photosphere and the solar transition region. Chromosphere normally invisible and it can be seen only during a total eclipse