Question

Continuous emission spectrum is produced by

• A. Mercury vapour lamp
• B. Sodium vapour lamp
• C. The Sun
• D. Incandescent electric lamp

Answer 1

Answer: (D)

Incandescent electric lamp

Answer 2

Incandescent electric lamp produces continuous emission spectrum whereas mercury and sodium vapour give line emission spectrum. Polyatomic substances such as $H _{2}, CO _{2}$ and $KMnO _{4}$ produces band absorption spectrum.