A parallel beam of fast moving electrons is incident normally on a narrow slit. A fluorescent screen is placed at a large distance from the slit. If the speed of the electrons is increased, which of the following statements is correct?

Options

A. Diffraction pattern is not observed on the screen in the case of electrons
B. The angular width of the central maxima of the diffraction pattern will increase
C. The angular width of the central maxima will decrease
D. The angular width of the central maxima will remain the same

Answer

C

Explanation

Angular width decreases as speed of the electron increases because the wavelength decreases.