Heat treatment of muscular pain involves radiation of wavelength of about 900 nm. Which spectral line of H atom is suitable for this purpose? [RH = 1 $ \times $ 105 cm–1, h = 6.6 $ \times $ 10–34 Js, c = 3 $ \times $ 108 ms–1]

Question

Heat treatment of muscular pain involves radiation of wavelength of about 900 nm. Which spectral line of H atom is suitable for this purpose?

[R_H = 1 $ \times $ 10⁵ cm^–1, h = 6.6 $ \times $ 10^–34 Js, c = 3 $ \times $ 10⁸ ms^–1]

Balmer, $\infty $ $ \to $ 2

Paschen, 5 $ \to $ 3

Paschen, $\infty $ $ \to $ 3

Lyman, $\infty $ $ \to $ 1

Solution

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