

InterviewSolution
Saved Bookmarks
1. |
Consider sunlight incident on a pinhole of width `10^(3)Å`. The image of the pinhole seen on a screen shall beA. a sharp white ringB. different from a geometrical imageC. a diffused central spot, white in colourD. diffused coloured region around a sharp central white spot |
Answer» Correct Answer - B::D (b,d) Given, width of pinhole `=10^(3)Å=1000Å` We know that wavelength of sunlight ranges from `4000Å " to " 8000Å` Clearly, wavelength ` lambda lt ` width of the slit. Hence, light is diffracted from the hole. Due to diffraction from the slight the image formed on the screen will be different from the geometrical image. |
|