question_answer

In a sample of H-atom electrons make transition from 5th excited state to ground state, producing all possible types of photons, then number of lines in infrared, region are

A) 4

B) 5

C) 6

D) 3

Correct Answer: C

Solution :

[c] Maximum number of lines produced\[=\frac{6(6-1)}{2}=15\].

Out of these 15 lines, 5 lines belong to ultra violet region and 4 lines are in visible region and rest are in infrared region.