List of top Physics Questions on Dual nature of radiation and matter asked in TS EAMCET

If electrons of mass 'm' and de Broglie wavelength '$\lambda$', incident on a metal plate in an X-ray tube, then the minimum wavelength of X-rays emitted is
(h = Planck's constant and c = Speed of light in vacuum)

In a photoelectric experiment, the slope of the graph drawn between stopping potential along y-axis and frequency of incident radiation along x-axis is (Planck's constant = $6.6\times 10^{-34}$ Js)

When photons incident on a photosensitive material of work function 1.5 eV, the maximum velocity of the emitted photoelectrons is $8\times10^5$ ms$^{-1}$. The stopping potential of the photoelectrons is (Mass of the electron $= 9\times10^{-31}$ kg and charge of the electron $= 1.6\times10^{-19}$ C)

20 kV electrons can produce X-rays with a minimum wavelength of