Infared WAvelengths in transition through energy levels

[skibum143]

Homework Statement

How many transitions involving the hydrogen energy levels shown correspond to photons of infrared light? The infrared range is less than 1.8 eV

Homework Equations

Paschen Lines = Infared wavelengths

The Attempt at a Solution

I thought that since Paschen lines = Infared wavelengths, that 6 to 3, 5 to 3, and 4 to 3 would be the three transitions that corresponded to infared light. Not sure what I'm doing wrong here. Diagram is attached. Thanks!

 

[ideasrule]

What about 6 to 5, 6 to 4, and 5 to 4?

 

[skibum143]

Ah, I see. I thought that the infared rays were only the ones that landed on level 3, but they can land on level 3, 4, OR 5? However, visible rays ONLY land on level 2 and UV rays ONLY land on level 1, is that correct? Thanks for your help!