Problem: The figure shows the interference pattern obtained in a double-slit experiment with light of wavelength λ. Identify the fringe or fringes that result from the interference of two waves whose phases differ by exactly 2λ. 

FREE Expert Solution

In a double-slit experiment, constructive interference is achieved when two waves reach the screen shifted by an integer number of wavelengths ±2λ. 

The waves are in phase at this point.

The amplitudes of the waves add up and the resulting fringe is bright since the intensity of light is at maximum.

View Complete Written Solution
Problem Details

The figure shows the interference pattern obtained in a double-slit experiment with light of wavelength λ. 

Identify the fringe or fringes that result from the interference of two waves whose phases differ by exactly 2λ. 

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Young's Double Slit Experiment concept. You can view video lessons to learn Young's Double Slit Experiment. Or if you need more Young's Double Slit Experiment practice, you can also practice Young's Double Slit Experiment practice problems.