Light of wavelength l and frequency f passes through a single slit of width a. The diffraction pattern is observed on a screen a distance x from the slit. Which of the following will decrease the width of the central maximum?
A、Decreasetheslitwidth.;
B、decreasethefrequencyfofthelight.;
C、increasethewavelengthlofthelight.;
D、decreasethedistancexofthescreenfromtheslit.
发布时间：2025-08-23 03:47:42
