Author Question: In a He-Ne laser, the actual emission line at 632.8 nm comes from a jump down in what atom(s)? A) ... (Read 73 times)

madam-professor · **on:** Jul 27, 2018

In a He-Ne laser, the actual emission line at 632.8 nm comes from a jump down in what atom(s)?

A) neon
B) helium
C) helium and neon
D) oxygen
E) hydrogen

Question 2

If the ac peak current through a 100 ohm resistor is 1.7 A, the peak voltage across this resistor is

A) 289 V.
B) 110 V.
C) 170 V.
D) 210 V.
E) 120 V.