sin sigma/sin 90=1/2=> sin sigma= pi/6 rad. beta=180-90-30=60=pi/3 rad. (as the angle of two extensions is pi/2.
sin alpha/ sin 60=2/1=> sin alpha/sqrt(3)/2=2=> sin aplha=sqrt (3)=1.7. I don't know where I am wrong.
http://s32.postimg.org/6fsfdz69x/image.png
I am adding: pi/6 rad is the angle of incidence. The first refracted angle is pi/3 rad. sin pi/3/sina=1/2
sin a=1.7. Where am I wrong?
Homework Statement
A ray of light falls on the surface AC of a prism with a straight angle and with two sides equal. For which incidence angle the ray won't come out of the surface AB. The index of refraction for the prism is n=2.
Homework Equations
sina/sinb=n2/n1
The Attempt at a Solution...
Homework Statement
Two rays of light fall on a surface of the prism. Do they remain parallel after they come out from the prism?
Homework Equations
sina/sinb=n2/n1
The Attempt at a Solution
I think they do, as the incidence angles are equal, the refraction angles are equal they become...
Homework Statement
http://s32.postimg.org/4urcaq0xx/image.png
The incidence angle of a light ray over a tile of glass with dy faces parallel is pi/3 rad. Find the distance between the incidence point and the refraction one of the ray with the tile, if the distance between these rays is 0.7 cm...
Homework Statement
When the incidence angle is equal to the angle of refraction?
Homework Equations
sina/sinb=n2/n1The Attempt at a Solution
I think as a=b => sina=sinb => n1=n2. We should have the same environment? But is that refraction?
Homework Statement
Two wires AD and DC are put in the magnetic field with induction B=0.01T so that they form the angle pi/3 radian and the extremities A and C are in the same force line (what does it mean?). In the wires passes the current I=2A (intensity). Find the forces with which the field...