Understanding Diffraction and Diffraction Gratings

Understanding Diffraction and Diffraction Gratings

Assessment

Interactive Video

Physics

10th - 12th Grade

Practice Problem

Hard

Created by

Nancy Jackson

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is diffraction?

The spreading of a wave when it passes through a gap or around an obstacle

The absorption of light by a material

The reflection of light off a surface

The bending of light when it hits a mirror

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a diffraction grating consist of?

A solid piece of glass

A reflective surface

Multiple different slits or openings

A single large opening

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many lines per millimeter does the example diffraction grating have?

400 lines per millimeter

200 lines per millimeter

100 lines per millimeter

300 lines per millimeter

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the line separation 'd' in a diffraction grating?

The wavelength of the light

One over the number of lines per meter

The distance between two slits

The distance between two light sources

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the diffraction equation d sin(θ) = nλ, what does 'n' represent?

The intensity of light

The angle of incidence

The order of diffraction

The speed of light

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the central maximum in diffraction?

The point where light is reflected

The point directly opposite the light source

The point where light is refracted

The point where light is absorbed

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the wavelength used in the example problem?

700 nanometers

600 nanometers

500 nanometers

800 nanometers

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