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Lesson: Double-Slit Interference

Worksheet: Double-Slit Interference • 9 Questions

Q1:

In a double-slit experiment, the fifth maximum is 2.8 cm from the central maximum on a screen that is 1.5 m away from the slits. If the slits are 0.15 mm apart, what is the wavelength of the light being used?

Q2:

A helium-neon laser emits light of wavelength 632.9 nm. This light passes through two slits 0.031 mm apart and is incident on a screen 10.0 m away from the slits. Determine the distance between adjacent bright fringes in the interference pattern produced.

Q3:

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.

Q4:

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.

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 ?

Q6:

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

Q7:

Light of wavelength 710 nm illuminates a double slit with a slit separation of 0.150 m. Light from the slits is incident on a screen 3.00 m away.

Find the distance on the screen between the central maximum and the third maximum of the diffraction pattern.

Find the distance on the screen between the second maximum and the fourth maximum of the diffraction pattern.

Q8:

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

Q9:

A double-slit experiment is to be set up so that the bright fringes appear 1.27 cm apart on a screen 2.13 m away from the two slits. The light source was wavelength 500 nm. What should be the separation between the two slits?

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