1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Aloiza [94]
3 years ago
14

Light of wavelength 500 nm is incident on a thin sheet of plastic film (n= 1.50) in air. What is the thinnest the sheet can be s

o that the reflected light from the surfaces undergoes destructive interference?
Physics
2 answers:
cricket20 [7]3 years ago
7 0

Answer:

t = 1.6667 10⁻⁷ m

Explanation:

When light falls on a thin film on the surface we have two phenomena

- a change in phase when the beam passes to a medium with a higher index

- on the other hand, in the wavelength, due to the refractive index of the medium

       λ = λ₀ / n

The second ray reflected from the other surface has no phase change

So the path difference between the two rays for destructive interference is

           2t = m   λ₀ / n

           t = m   λ₀ / 2n

Let's calculate

          t = 1  500 10⁻⁹ / 2 1.50

          t = 166.67 10⁻⁹ m

          t = 1.6667 10⁻⁷ m

Inessa [10]3 years ago
5 0

Answer:

The thinnest the sheet can be is 8.33 * 10^-8

Explanation:

λ = 500 nm = 500 * 10^-9

n = 1.50

The thinnest can be calculated using the formula;

2nd = (m+1/2)λ

thinnest, m = 0

2d (1.50) = (0+ 1/2) (500 x 10^-9 )

3d = 2.5 * 10^-7

d = 2.5 * 10^-7/3

d= 8.33 * 10^-8

Therefore, the thinnest sheet will be 8.33 * 10^-8

You might be interested in
A box with a mass of 50 kg is raised straight up. What is the force of the box?
8_murik_8 [283]

Answer:

A box with a mass of 50 kg is raised straight up. What is the force of the box? plss help!! two types exist-positive and negative. possible answers: A- electric current B- repel C- lines of force D- charges. Five wavelengths are generated every 0.100 s in a tank of water.

Explanation:

I hope it helped

3 0
2 years ago
What happens to air as it warms ,expands and become less dense
AleksandrR [38]
Air expands as it warms. Therefore warm air is less dense than cool air. The warm air from the first floor apartments rises to the second floor. People on the second floor require less heating to keep their <span>apartments comfortable.
-Hope this helps </span>
6 0
3 years ago
Someone please help me with these questions! (The ones in the picture) Please I am super confused!
lozanna [386]

Answer:

c-d

Explanation:

3 0
3 years ago
What is the direction of friction if a ball is rolling on the ground?
morpeh [17]
The direction is the same as the direction the ball is moving in. Because of the rolling of the ball, the direction of movement of the surface of the ball is opposite the overall direction of the ball. Since friction will oppose the direction of movement of the surface of the ball, it is in the same direction as the net direction of movement of the ball.
3 0
3 years ago
How can you tell that this paragraph uses a quotation?<br> Check all that apply?
Debora [2.8K]

Answer- There are two reasons that we know quotations have been used first is the use of of name of the person who quoted it and secondly the quotation is written inside the quotation marks.

Explanation- Quotation is nothing but using a line that has been already quoted by someone somewhere. Such sentences are normally written inside quotation marks. In the above given paragraph the name of the person who quotes the sentence is also given hence we know that our quotation has been used.

8 0
3 years ago
Other questions:
  • A database that is flexible and easy to use was recently installed. the data is stored in rows and columns much like a spreadshe
    5·1 answer
  • if a truck falls for 33 seconds after it drives off a bridge into canyon below. how far does it fall before it hits the canyon f
    6·1 answer
  • Newton’s empirical law of cooling/warming of an object is given by ( ), T Tm k dt dT = − where k is a constant of proportionalit
    12·1 answer
  • my question is about a cupcake recipe and there asking me about a 7-digit code with no spaces and to me that question was pretty
    8·1 answer
  • How have human factors contributed to climate change, and what evidence supports these factors?
    6·2 answers
  • What part of an electric circuit are the wires that carry the electric current
    11·1 answer
  • Disadvantages of friction
    12·1 answer
  • I need help solving the equation 2Na(s)+Cl2(g)&gt;2NaCl(s)
    5·1 answer
  • In the video, light passing through two slits creates a pattern of bright and dark fringes on a screen. The bright fringes resul
    9·1 answer
  • How do you find component velocities of parallel vectors?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!