Question

Heat treatment of muscular pain involve radiation of wavelength of about 900mm. which spectral line of H atom is suitable for this purpose r4=1×10^3cm-1,h=6.6×10-
^-36js ,e3×10s ms-1
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Answer 1

Answer:

We have,

λ1=RZ2(nl21−nf21)

Here if nl=3 and nf=∞

λ1=10−7×12(312−∞21)=910−7=900nm