AnswersCrowley Credit Recovery Physics BWave Interactions

Diffraction Answers

16 verified answers2 views
1
Free Preview

Which is the destructive interference formula for diffraction grating problems?

A
dsin =
Option A
B
dcos =
Option B
C
dcos = n
Option C
D
dsin = n
Option D
2
Free Preview

Which is a tool used by scientists to determine the composition of objects?

A
a hologram
B
a spectrometer
C
a wave front
D
a prism
3

Hilda looks at a CD and sees different colors. Which best explains why she sees different colors when light strikes a CD?

A
Some wavelengths of light are absorbed by the CD.
B
Different wavelengths of light bend at different angles.
C
The smooth surface of a CD causes wavelengths of light to scatter.
D
The rough surface of a CD causes wavelengths of light to bend at the same angle.
4

Which best describes what happens to sunlight after it passes through the keyhole of a door?

A
It converges into one particular shadow region.
B
It spreads out into multiple shadow regions.
C
It bends back toward the door.
D
It scatters back toward the door.
5

The distance between slits on a diffraction grating is 0.60 mm, and one of the angles of diffraction is 0.30°. The light forms a second-order bright band.

A
1047 nm
B
1571 nm
C
3142 nm
D
6284 nm
6

Which is the constructive interference formula for diffraction grating problems?

A
dsin =
Option A
B
dcos =
Option B
C
dcos = n
Option C
D
dsin = n
Option D
7

Jaylen draws a diagram to show the behavior of light as it passes through an opening.

Question illustration
A
by drawing the arrows on the right side of the opening so they point outward instead of inward
B
by drawing the arrows on the left side of the diagram so they are parallel to the wave fronts instead of perpendicular
C
by drawing only two arrows on the right side of the opening, with one pointing upward and the other pointing downward
D
by drawing only two arrows on the left side of the diagram, with one parallel to the wave fronts and one perpendicular to the wave fronts
8

"diffraction"

Answer:

105294

9

A light with a second-order dark band forms a diffraction angle of 20.0°. The diffraction grating has 200.0 lines per mm.The wavelength of the light, to the nearest whole number, is nm.

Answer not available
10

Light with a wavelength of about 510 nm is made to pass through a diffraction grating. The angle formed between the path of the incident light and the diffracted light is 12.0° and forms a first-order bright band.The number of lines per mm in the diffraction grating, rounded to the nearest whole number, is lines per mm.

Answer not available
11

The diagram shows a spectrometer being used to analyze a sample of a solution.

Question illustration
A
W
B
X
C
Y
D
Z
12

The diagram shows monochromatic light passing through two openings.

Question illustration
A
constructive interference in which waves cancel each other out
B
constructive interference in which waves strengthen each other
C
destructive interference in which waves cancel each other out
D
destructive interference in which waves strengthen each other
13

Lexy and Jin study the diagram shown. Lexy says that the diffraction angle is the one labeled R, and Jin says that the diffraction angle is the one labeled S.

Question illustration
A
Lexy is correct because angle R is between the incident wave, n = 0, and a diffracted wave.
B
Lexy is correct because angle R includes the diffracted wave at n = 1.
C
Jin is correct because angle S is measured from the barrier and includes n = 2, the wave that has the most diffraction.
D
Jin is correct because angle S is between the dimmest order bands, n = 1 and n = 2.
14

What causes diffraction that results in a fuzzy glow around a full moon?

A
Moonlight converges into a single area around the moon called a shadow region.
B
Moonlight bends toward a single area around the moon called a shadow region.
C
Light from the Sun reflecting off the moon bends around particles in Earth’s atmosphere and then spreads out.
D
Light from the Sun reflecting off the moon then reflects off particles in Earth’s atmosphere and scatters.
15

A(n) _______ is a line in which waves move that are moving together all in the same phase

A
Light wave
B
Wave front
C
Incident beam
D
Dark wave
16

What is the approximate wavelength of a light whose first-order bright band forms a diffraction angle of 45.0° when it passes through a diffraction grating that has 500.0 lines per mm?

A
236 nm
B
353 nm
C
943 nm
D
1414 nm
17

Which image best illustrates diffraction?

A
A picture of a few clouds covering the sun and streams of light coming through the clouds.
Option A
B
A photo of a water lily floating on the water.
Option B
C
A picture of a straw in a glass of water showing the shift in position of the straw due to the water.
Option C
D
A picture of a rainbow.
Option D
18

What is used to generate interference patterns in order to produce a hologram?

A
shadows
B
spectrometers
C
lasers
D
prisms
19

What is the approximate wavelength of a light whose second-order dark band forms a diffraction angle of 15.0° when it passes through a diffraction grating that has 250.0 lines per mm?

A
26 nm
B
32 nm
C
414 nm
D
518 nm

Did you find these answers helpful?

More from this Course

Quiz
19 verified answers

Wave Interactions

Quiz
18 verified answers

Electromagnetic Waves

Quiz
17 verified answers

Sound Waves

Diffraction Answers — Crowley Credit Recovery…