If λCu is the wavelength of Kα X-ray line of copper (atomic number 29) and λMo is the wavelength of the Kα X-ray line of molybdenum (atomic number 42), then the ratio λCu/λMo is close to

Engineering

Physics

X Rays New

Question

If λ_Cu is the wavelength of K_α X-ray line of copper (atomic number 29) and λ_Mo is the wavelength of the K_α X-ray line of molybdenum (atomic number 42), then the ratio λ_Cu/λ_Mo is close to

1.99

2.14

0.48

0.50

LiveFree JEE Main Previous Year Online Papers Live Free JEE Advance Previous Year Online Papers

College PredictorLive

Know your College Admission Chances Based on your Rank/Percentile, Category and Home State.

Get your JEE Main Personalised Report with Top Predicted Colleges in JoSA

$\sqrt{f} = b (z - a)$

$\frac{1}{\sqrt{λ_{Cu}}} = b (29 - 1)$

$\frac{1}{\sqrt{λ_{Mo}}} = b (42 - 1)$

$\sqrt{\frac{λ_{Mo}}{λ_{Cu}}} = \frac{28}{41}$

$\frac{λ_{Cu}}{λ_{Mo}} = \frac{41^{2}}{28^{2}} = \frac{1681}{784} \approx 2 .14$