# Double Slit Diffraction Quiz

10 Questions | Total Attempts: 525  Settings  A short quiz on the key concepts in the Double Slit Diffraction Unit. Just type in your name and start the quiz. Answers to all the questions will be presented at the end of the quiz.

• 1.
When does Double Slit Diffraction Occur?
• A.

When the Slit Width is smaller than λ and distance between Slits is less than λ

• B.

When the Slit Width is larger than λ and distance between slits is bigger than λ

• C.

When the Slit Width is smaller than λ and distance between the slits is slightly more than λ.

• D.

Both A and B

• E.

None of the Above

• 2.
Which of the following is true for antinodes (maxima) in Double Slit Diffraction?
• A.
• B.
• C.
• D.
• E.

None of the Above

• 3.
Red light of wavelength 600 nm passes through two parallel slits. Nodal lines are produced ona screen 3.0 m away. The distance between the 1st and the 10th nodal lines is 5.0 cm. What is the separation of the two slits?
• A.

3.24 X 10^-4 m

• B.

3.58 X 10^-5 m

• C.

4.23 X 10^-4 m

• D.

4.48 X 10^-5m

• E.

None of the Above

• 4.
Interfringe represents
• A.

Spaces between antinodes in a diffraction pattern

• B.

Spaces between nodes in a diffraction pattern

• C.

Width of the Central Maximum in Double Slit Diffraction

• D.

The interaction between the particle and wave components of light.

• E.

Both A and B

• 5.
All the bright and dark fringes in the double slit diffraction pattern are equally spaced.
• A.

True

• B.

False

• 6.
Monochromatic light of wavelength 600nm falls on two parallel narrow slits 400nm apart. A screen is placed 2 meters away. What is the angle of the 3rd order maximum that is created?
• A.

28 degrees

• B.

34 degrees

• C.

16 degrees

• D.

18 degrees

• E.

None of the Above

• 7.
The Double Slit Experiment was first performed by Sir Isaac Newton.
• A.

True

• B.

False

• 8.
In Double Slit Interference, there can be an infinite number of dark and bright fringes.
• A.

True

• B.

False

• 9.
The equations for double slit interference are exactly the opposite as those for diffration gratings
• A.

True

• B.

False

• 10.
Double Slit Diffraction doesn't work when the slits are too far apart because all the equations rely on the fact that the distance between the slits is very small compared to the distance between the slits and the screen.
• A.

True

• B.

False

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