In a CRT television, electrons of kinetic energy $2.0 \mathrm{keV}$ strike the screen. No EM radiation is emitted below a certain wavelength. Calculate this wavelength.
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62 \times 10^{-34} \, \text{J s}$), $c$ is the speed of light ($3 \times 10^8 \, \text{m/s}$), and $\lambda$ is the wavelength of the photon. ** Show more…
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