Heat treatment of muscular |Atomic Structure | JEE MAIN 2019

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JEE MAIN 2019

11-01-2019 S1

Question

Heat treatment of muscular pain involves radiation of wavelength of about 900 nm . Which spectral line of Hatom is suitable for this purpose? $$ \left[\mathrm{R}_{\mathrm{H}}=1 \times 10^5 \mathrm{~cm}, \mathrm{~h}=6.6 \times 10^{-34} \mathrm{JS}, \mathrm{c}=3 \times 10^8 \mathrm{~ms}^{-1}\right] $$

Select the correct option:

A

Balmer, $\infty \rightarrow 2$

B

Lyman, $\infty \rightarrow 1$

C

Paschen, $5 \rightarrow 3$

D

Paschen, $\infty \rightarrow 3$

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