Q. Missing lines in a continuous spectrum reveal
A) Defects of the observing instrument
B) Absence of some elements in the light source
C) Presence in the light source of hot vapours of some elements
D) Presence of cool vapours of some elements around the light source
Explanation
The correct answer is Option D: Presence of cool vapours of some elements around the light source.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.