If a Sunspot Appears One-Quarter as Bright as the Surrounding

question 62

Multiple Choice

If a sunspot appears one-quarter as bright as the surrounding photosphere,and the average temperature of the photosphere is 5,800 K,what is the temperature of the gas in this sunspot?

• A) 4,100 K
• B) 4,500 K
• C) 5,200 K
• D) 5,500 K