Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ADV PHYSICS > Interference > Flashcards

Interference Flashcards

You may prefer our related Brainscape-certified flashcards:
Physics 101 flashcards AP® Physics flashcards
1
Q

What makes a wave corgerent

A

Only emits one frequency and has a constant phase difference

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

When does destructive interference occur

A

When two coherent waves have a phase difference of TT

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What does opd depend on

A

The refractive index that the medium is traveling through

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

When does opd occur

A

When two waves from the same coherent source take different routes to the detector

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is opd and gpd measured in

A

M

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

When reflected from a low to high medium what will be the phase chnage

A

TT radians

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the phase change when light is reflected from a high to low reflective index

A

No phase change

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

A phase change of TT

A

Wavelength / 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What happens when light hits a transparent medium

A

Some of the light is reflected and some of it is transmitted through in the museum (refracted)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

When does thr interfenxe of waves by division of amplitude occur

A

When a wave is split into two comments by relefcfion and refraction before revombined later.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

When does the thin flim interference occur

A

When light reflects from the top and bottom surfaces of a thin flim of a substance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How do the two rays revombine

A

Through superposition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Explain how to get to the formula opd= 2nflim d + wave/2

A

The 2 d from come the wave going inti the medium and coming back out so traveling twice
The ray 1 under goes a pjse xhnave of TT

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Why is the cover all effect multi coloured with sunlight falls on a oil flim

A

Because the surface isn’t at the same thickness so some wavelengths interfere constructivly and some destructive because of the different thickness

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is bloomed coating

A

It is where a transparent material is deposited on a glass lens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Why is bloomed coating used

A

So that rhe lens will be non-reflective to certain wavelengths

17
Q

What is the formula for opd for bloomed coating

A

Opd=2ncoating d

18
Q

What is opd equal to when we need destructive interference to occur

A

Wavelength/ 2

19
Q

How can interference fringes be produced

A

By a think wedge of air

20
Q

What happens when the wedge is illuminated with a monochromatic source

A

Brigbt and dark bands are seen in thr reflected beams

21
Q

What is the symbol for fringe separation

A

Delta x

22
Q

What direction does a point spruce radiate to when light is emitted

A

All direction

23
Q

With a monochromatic light spruce what do the point of the wave front represent

A

The wavefronts are coherent as they have the same wavelength and are in phase

24
Q

What happens if you take two parts of a wave and combine them

A

Then we will see interference by divion ot wavelength

25
Q

What is divion by wavelength

A

Occurs when two coherent waves orginiating from the same wavefront undergo interference

26
Q

Where does the brighst fringe occurs on the young slits experiment

A

Occurs at the centre of the interference pattern as this point is equal distant from the slits and so the wave arrive exactly in phase

27
Q

Where does the first dark fringe occur

A

On either side of this when the optical path difference between the wave is exactly half a wavelength.

28
Q

What is the central bright fringe corresponds to m

A

M=0

29
Q

D in young slits experiment

A

Distance between the grating and screen

30
Q

d in young slits experiment

A

Distance between S1 and S2

31
Q

For a light of a constant wavelength. As d decreased what happens to the delta x

A

It will increase

32
Q

If D increases what happens to delta X

A

Increases

33
Q

If D increases what happens to delta X

A

Increases

34
Q

For a constant slit separation. If the wavelengths increased the fringe separation

A

Increases

35
Q

For a constant slit separation. If the slit separation greater for red or blue light

A

Greater for red

36
Q

Which colour diffraction the most red or voloit

A

Red

37
Q

Which colour diffraction the most red or voloit

A

Red

38
Q

Colour order

A

Vilet, indigo, blue, green, yellow, orange, red

ADV PHYSICS (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions