Multiple choice

The temperature of solar surface called 'photosphere' is about _____.

  1. 3000 K

  2. 4000 K

  3. 5000 K

  4. 6000 K

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The photosphere (visible surface of the Sun) has a temperature of approximately 6000 K (about 5700°C). This is why the Sun appears white/yellow to us - it emits light characteristic of a 6000 K black body radiator.