An N-slit system has slit separation d and slit width a.Plane waves with intensity I and wavelength $\lambda$ are incident normally on it.The angular separation of the lines depends only on:
A)a and N
B)a and $\lambda$
C)N and$\lambda$
D)d and $\lambda$
E)I and N

Question

Quizplus · Accepted Answer

The angular separation of the lines in an N-slit system depends on the slit separation (d) and the wavelength ($\lambda$). The formula for angular separation involves these two parameters, not the slit width (a), the number of slits (N), or the intensity (I).

An N-Slit System Has Slit Separation D and Slit Width λ\lambdaλ

An N-Slit System Has Slit Separation D and Slit Width $\lambda$