Lesson: Double-Slit Interference

In this lesson, we will learn how to calculate different light intensities wavelengths at variable angles relative to a double-slit's transmission axis.

Sample Question Videos

02:30

Worksheet: 21 Questions • 1 Video

Q1:

Light passes through two slits separated by 6.00 μm. The third-order minimum of the interference pattern produced is at an angle of from a line perpendicular to the slits. What is the wavelength of the light?

Q2:

At what angle from a line perpendicular to two slits separated by 0.010 mm is the fifth-order maximum of the interference pattern produced by light with a wavelength of 450 nm?

Q3:

Find the largest wavelength of light falling on two slits separated by 3.20 μm for which there is a first-order maximum when the angle equals .

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