Lesson: Phasors

Physics

In this lesson, we will learn how to use phasors to describe the characteristics of the diffraction-produced interference patterns.

Worksheet

Q1:

Assume that the maxima are halfway between the minima of a single-slit diffraction pattern. Use the formula where is the phase difference between wavelets from the first and last sources, to determine the intensities of the third and fourth maxima in terms of the intensity of the central maximum.

Q2:

Assume that the maxima are located halfway between the minima of a single-slit diffraction pattern.

Use the diameter and circumference of the phasor diagram shown to determine the intensity of the third maximum in terms of the intensity of the central maximum.

Use the diameter and circumference of the phasor diagram shown to determine the intensity of the fourth maximum in terms of the intensity of the central maximum.

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