When the chromosphere can be seen during a solar eclipse, it ...

[SO00]

When the chromosphere can be seen during a solar eclipse, it appears:
 
  A) invisible.
  B) violet.
  C) blue.
  D) yellow.
  E) red.

Question 2

When we see X-rays from an accretion disk in a binary system, we can't immediately tell whether the accretion disk surrounds a neutron star or a black hole. Suppose we then observe each of the following phenomena in this system.
 
  Which one would force us to immediately rule out the possibility of a black hole? A) bright X-ray emission that varies on a time scale of a few hours
  B) spectral lines from the companion star that alternately shift to shorter and longer wavelengths
  C) sudden, intense X-ray bursts
  D) visible and ultraviolet light from the companion star

[chereeb]

Answer to Question 1

E

Answer to Question 2

C

[SO00]

Excellent

[Sarahjh]

TYSM