In a Young's double-slit experiment,both the wavelength and the slit separation are increased by 50%.What happens to the distance between two adjacent bright fringes?
A)It increases by 50%.
B)It decreases by 50%.
C)The distance stays the same.
D)The distance increases by a 100% or more.

Question

Quizplus · Accepted Answer

The distance between adjacent bright fringes is determined by the wavelength of the light and the distance between the slits. Since both the wavelength and the slit separation are increased by 50%, the ratio of the two values remains the same, and thus the distance between adjacent bright fringes remains the same.

In a Young's Double-Slit Experiment,both the Wavelength and the Slit