51. What is the name of the type of light that is produced when an electric current is passed through a gas?
a) Incandescent light
b) Fluorescent light
c) Neon light
d) Laser light
52. What is the name of the type of light that is produced when an object is heated to a high temperature?
a) Incandescent light
b) Fluorescent light
c) Neon light
d) Laser light
53. What is the name of the type of light that is produced when certain substances are exposed to ultraviolet light?
a) Incandescent light
b) Fluorescent light
c) Neon light
d) Laser light
54. What is the name of the type of light that is produced when atoms in a gas are excited by an electric discharge?
a) Incandescent light
b) Fluorescent light
c) Neon light
d) Laser light
55. What is the name of the type of light that is produced by stimulated emission of radiation?
a) Incandescent light
b) Fluorescent light
c) Neon light
d) Laser light
