Author Question: All Type II supernovae produce neutron stars when they collapse. Indicate whether the statement ... (Read 25 times)

vicky · **on:** Jul 27, 2018

All Type II supernovae produce neutron stars when they collapse.

Indicate whether the statement is true or false

Question 2

In a hydrogen atom, a transition from the 2nd to the 1st excited state will produce

A) a dark absorption line.
B) an ultraviolet spectral line.
C) no emission line.
D) three different emission lines.
E) the bright red Balmer alpha emission line.