A) Young's double slit arrangement gives rise to irregular interference fringe pattern which is overcome by Fresnel biprism which produces coherent sources by refraction in a prism
B) Finite width of slits in Young's double slit experiment gives rise to unwanted diffraction effects that causes errors. This is overcome by Fresnel biprism by producing virtual coherent point sources.
C) Young's double slit arrangement produces interference fringe pattern of low intensity which is overcome by Fresnel biprism.
D) All of the above
Correct Answer: B
Solution :
| Option [b] is correct |
| Explanation: In Young's double Slits experiment, a single source is split in two coherent sources. For the Young's slits experiment, we must approximate that the slits act as point sources. This however is not the case, since the slits have finite width. In this way, it gives rise to unwanted diffraction effects that causes errors. |
| The Fresnel biprism experiment overcomes this problem. |
| When monochromatic light through a narrow slit falls on biprism that divides it into two components. One of these component is refracted from upper portion of biprism and the other one refracted through lower portion. |
| Two virtual coherent point sources are formed from the original source. |
You need to login to perform this action.
You will be redirected in
3 sec
