In a Young's double-slit experiment,what happens to the angular separation between the fringes when the wavelength is increased at the same time that the slit separation is decreased?
A)It increases.
B)It decreases.
C)It stays the same.
D)The relative sizes of the changes need to be known before a definite answer can be given.

Question

Quizplus · Accepted Answer

The angular separation between the fringes in a Young's double-slit experiment is given by the formula θ = λ/d, where λ is the wavelength of light and d is the distance between the slits. Increasing the wavelength (λ) while decreasing the slit separation (d) both contribute to increasing the angular separation (θ), hence the angular separation between the fringes increases.

In a Young's Double-Slit Experiment,what Happens to the Angular Separation