Q. Continuous emission spectrum is produced by
A) Incandescent electric lamp
B) Mercury vapour lamp
C) Sodium vapour lamp
D) Polyatomic substances
Explanation
(a) Incandescent electric lamp produces continuous emission spectrum whereas mercury and sodium vapour give line emission spectrum. Polyatomic substances such as $H_{2},\ C{O_{}}_{2}$ and ${KMnO}_{4}\ $produces band absorption spectrum.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.