Is the incident ray and the emergent ray parallel? What else can you tell me about (the similarites between) the two?
2007-02-07 20:01:51 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Physics
the incident & emergent rays might not always be parallel.
If the ray passes from only one medium having parallel surfaces then the rays are parallel,like in the case of glass slab but if the surfaces are not parallel the rays willnot be parallel either,like in prism.
2007-02-07 20:27:39 · answer #1 · answered by Anonymous · 0⤊ 0⤋
No, not always. If light passes through a prism, a transparent object with flat, polished surfaces at angles to each other, the exit ray is no longer parallel to the incident ray. Because the refractive index of a substance varies for the different wavelengths, a prism can spread out the various wavelengths of light contained in an incident beam and form a spectrum. The angle between the path of the incident ray and the path of the emergent ray is the angle of deviation. If the angle the incident ray makes with the normal is equal to the angle made by the emergent ray, the deviation is at a minimum. The refractive index of the prism can be calculated by measuring the angle of minimum deviation and the angle between the faces of the prism.
2007-02-08 04:19:04 · answer #2 · answered by Jordan B 2 · 1⤊ 0⤋
ayyoyo y ask such a silly question .. v and all r mba guys n u r askin 4 th grade stuff .. read a text and find out 4 urself..
2007-02-08 05:41:34 · answer #3 · answered by amazed !!! 4 · 0⤊ 0⤋
Not necessarily parellel if refracton is through prism.
2007-02-08 04:05:39 · answer #4 · answered by J.SWAMY I ఇ జ స్వామి 7 · 0⤊ 0⤋
i think that si the only one...
ts
2007-02-08 04:09:06 · answer #5 · answered by changed preferences... 3 · 0⤊ 0⤋