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Lesson: Double-Slit Interference

Investigate the variation in intensity with angle relative to the transmission axis of double-slits for different wavelengths of light. Define conditions for constructive and destructive interference.

Worksheet: Double-Slit Interference • 9 Questions

Q1:

Calculate the wavelength of light that produces its first minimum at an angle of when falling on a single slit of width 1.00 μm.

Q2:

Light of wavelength mm is incident on double-slits 0.100 mm apart. Calculate the angle that corresponds to the third-order maximum of the diffracted light.

Q3:

What is the highest-order maximum for 400-nm light falling on double slits separated by 25.0 μm?

Q4:

Two slits apart are illuminated by light of wavelength 600 nm. What is the highest order fringe in the interference pattern?

Q5:

What is the wavelength of light falling on double slits separated by 2.00 μm if the third-order maximum is at an angle of ?

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