The two media are lossless dielectrics with n1>n2

  • Thread starter Thread starter tony8
  • Start date Start date
  • Tags Tags
    Dielectrics
AI Thread Summary
In the discussion, participants explore how the distance 'b' influences the amplitude and phase of a reflected wave when the angle θ exceeds the critical angle in two lossless dielectric media with n1>n2. It is noted that total internal reflection occurs, leading to changes in the reflected wave's characteristics. The relationship between 'b' and the wave's properties is questioned, indicating a need for further clarification. The importance of demonstrating prior attempts at solving the problem is emphasized, as per forum guidelines. Overall, the conversation highlights the complexities of wave behavior at critical angles in dielectric materials.
tony8
Messages
3
Reaction score
0

Homework Statement


The two media are lossless dielectrics with n1>n2. If θ exceeds thtee critical angle,
state how b affects the amplitude and phase of the reflected wave, and give a physical
reason for your statement
θ:angle between incident wave and normal line
b:distance between
123.gif


Homework Equations





The Attempt at a Solution

 
Physics news on Phys.org
EM wave through the media

Homework Statement


The two media are lossless dielectrics with n1>n2. If θ exceeds the critical angle,
state how b affects the amplitude and phase of the reflected wave, and give a physical
reason for your statement
θ:angle between incident wave and normal line
b:distance between
View attachment 42582

Homework Equations





The Attempt at a Solution




 


tony8 said:

Homework Statement


The two media are lossless dielectrics with n1>n2. If θ exceeds thtee critical angle,
state how b affects the amplitude and phase of the reflected wave, and give a physical
reason for your statement
θ:angle between incident wave and normal line
b:distance between
View attachment 42582

Homework Equations



The Attempt at a Solution

Hello tony8. Welcome to PF !

What have you tried?

Where are you stuck?

I see that you're relatively new to PF. According to the rules of this forum for Home Work Help:
...

NOTE: You MUST show that you have attempted to answer your question in order to receive help. You MUST make use of the homework template, which automatically appears when a new topic is created in the homework help forums. Once your question or problem has been responded to, do not go back and delete (or edit) your original post.
...

On helping with questions: Any and all assistance given to homework assignments or textbook style exercises should be given only after the questioner has shown some effort in solving the problem. If no attempt is made then the questioner should be asked to provide one before any assistance is given. Under no circumstances should complete solutions be provided to a questioner, whether or not an attempt has been made.

So you see, ours hands are tied until you show us something.
 
EM wave through the media

Homework Statement


The two media are lossless dielectrics with n1>n2. If θ exceeds the critical angle,
state how b affects the amplitude and phase of the reflected wave, and give a physical
reason for your statement
n:index of refraction
θ:angle between incident wave and normal line
b:distance between

pic.gif



Homework Equations





The Attempt at a Solution



I think the EM wave would totally reflect
I am confused why b will affect the reflected wave
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top