Question

The extreme wavelengths of Paschen series are
(a) 0.365 μm and 0.565 μm (b) 0.818 μm and 1.89 μm
(c) 1.45 μm and 4.04 μm (d) 2.27 μm and 7.43 μm

Answer 1

The answer is Option B.)

I hope it helps.