In demonstrating single-slit Fraunhofer diffraction,decreasing the wavelength of the light while keeping the slit width constant
A)does not affect the width of the central maximum.
B)increases the number of fringes within the central maximum.
C)decreases the number of fringes within the central maximum.
D)increases the width of the central maximum.
E)decreases the width of the central maximum

Question

Quizplus · Accepted Answer

According to the equation for single-slit Fraunhofer diffraction, the width of the central maximum is proportional to the wavelength of the light and inversely proportional to the width of the slit. When the wavelength is decreased while keeping the slit width constant, the width of the central maximum decreases. Therefore, the correct choice is E.

In Demonstrating Single-Slit Fraunhofer Diffraction,decreasing the Wavelength of the Light