Topic: Matter waves, de Broglie relation· Dual Nature of Matter and Radiation
Electrons of mass m with de-Broglie wavelength λ fall on the target in an X-ray tube. The cutoff wavelength (λ_0) of the emitted X-ray is
1. \(\lambda_0=\frac{2h}{mc}\)
2. \(\lambda_0=\frac{2m^2c^2\lambda^3}{h^2}\)
3. \(\lambda_0=\lambda\)
4. \(\lambda_0=\frac{2mc\lambda^2}{h}\)