Physics - Current Electricity Question with Solution | TestHub

Fast moving electrons create electromagnetic waves. So, the diffraction pattern will be observed. Also, the angular width of the central maximum is given by $\mathrm{W}=\frac{2\lambda }{\mathrm{a}}$, where $\mathrm{a}=$ width of the slit $\lambda =$ wavelength of the light . When the speed of electrons will increase, the frequency will increase which will result in decreasing the wavelength as the speed of light is a constant. Therefore, the angular width will decrease.