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
blondinia [14]
3 years ago
12

In a certain two slit diffraction experiment, two slits 0.02mm wide are spaced0.2mm between centers.(a) How many fringes appear

between the first minima of the single slit envelopeon either side of the central maximum?(b) If the angle between the central maximum and the second fringe to eitherside of the central maximum is 0.17 degrees, what is the wavelength?
Physics
1 answer:
Kamila [148]3 years ago
8 0

Answer:

a)   m = 10  and    b)  λ  = 3.119 10⁻⁷ m

Explanation:

In the diffraction experiments the maximums appear due to the interference phenomenon modulated by the envelope of the diffraction phenomenon, for which to find the number of lines within the maximum diffraction center we must relate the equations of the two phenomena.

Interference equation      d sin θ = m λ

Diffraction equation         a sin θ = n λ

Where d is the width between slits (d = 0.2 mm), a is the width of each slit (a = 0.02 mm). θ is the angle, λ the wavelength, m and n  are an integer.

Let's find the relationship of these two equations

    d sin θ / a sin θ = m Lam / n Lam

The first maximum diffraction (envelope) occurs for n = 1, let's simplify

    d / a = m

Let's calculate

    m = 0.2 / 0.02

    m = 10

This means that 10 interference lines appear within the first maximum diffraction.

b) let's use the interference equation, remember that the angles must be given in radians

    θ = 0.17 ° (π rad / 180 °) = 2.97 10⁻³ rad

    d sin  θ = m λ

    λ = d sin θ / m

    λ = 0.2 10⁻³ sin (2.97 10⁻³) / 2

    λ  = 3.119 10⁻⁷ m

You might be interested in
Derivation 1.2 showed how to calculate the work of reversible, isothermal expansion of a perfect gas. Suppose that the expansion
stellarik [79]

Answer:

(a) The work done by the gas on the surroundings is, 17537.016 J

(b) The entropy change of the gas is, 73.0709 J/K

(c) The entropy change of the gas is equal to zero.

Explanation:

(a) The expression used for work done in reversible isothermal expansion will be,

where,

w = work done = ?

n = number of moles of gas  = 4 mole

R = gas constant = 8.314 J/mole K

T = temperature of gas  = 240 K

= initial volume of gas  =  

= final volume of gas  =  

Now put all the given values in the above formula, we get:

The work done by the gas on the surroundings is, 17537.016 J

(b) Now we have to calculate the entropy change of the gas.

As per first law of thermodynamic,

where,

= internal energy

q = heat

w = work done

As we know that, the term internal energy is the depend on the temperature and the process is isothermal that means at constant temperature.

So, at constant temperature the internal energy is equal to zero.

Thus, w = q = 17537.016 J

Formula used for entropy change:

The entropy change of the gas is, 73.0709 J/K

(c) Now we have to calculate the entropy change of the gas when the expansion is reversible and adiabatic instead of isothermal.

As we know that, in adiabatic process there is no heat exchange between the system and surroundings. That means, q = constant = 0

So, from this we conclude that the entropy change of the gas must also be equal to zero.

Explanation:

6 0
3 years ago
When you walk across the ground and push on it with your feet...
marissa [1.9K]

Answer:

The ground pushes back on your feet with equal force.

Explanation:

Newton's Laws of Motion

6 0
3 years ago
Read 2 more answers
Select the correct arrow.<br> Which arrow correctly shows the flow of heat?<br> Reset<br> Next
julsineya [31]

Answer:

where is the image?

Explanation:

6 0
2 years ago
Read 2 more answers
Energy from solar radiation may be ________ or taken in by a surface or an object.
tester [92]

Answer:

Absorbed

Explanation:

I hope this helps you

7 0
3 years ago
What two major uses does this (H-R)diagram have for astronomers?
EastWind [94]
66666666666666666666666666666666666666666666666666666666666666666666666666666666666666

7 0
3 years ago
Other questions:
  • Biological systems use free energy based on empirical data that all organisms require a constant energy input. The first law of
    15·1 answer
  • Oxygen (O2) is best described as which of the following: An element A compound A mixture
    13·1 answer
  • What is the mass of a falling rock if it produces a force of 147N?
    5·1 answer
  • Two internal factors that are important in advancing the cell cycle are
    10·1 answer
  • How is a mineral of volcanic origin with large crystals most likely formed?
    11·2 answers
  • Why is the chemical formula magnesium sulfide written as MgS and NOT Mg2S2?
    11·2 answers
  • A straight, stiff, horizontal wire of length 46 cm and mass 20 g is connected to a source of emf by light, flexible leads. A mag
    10·1 answer
  • 174cm=____ m<br>1.74<br>17.4<br>1740<br>17,400​
    8·1 answer
  • A class of students performed the heat transfer experiment shown in the picture. In the experiment, three plastic dishes were pa
    5·1 answer
  • PLEAAASEE HELLPPPP?!?!?!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!