The diffraction effects in a microscopic specimen become important when the separation between two points is
Practice this Wave Nature of Light question from Engineering Entrance Exam.
Question Details
Physics
Wave Nature of Light
Engineering Entrance Exam
Question
The diffraction effects in a microscopic specimen become important when the separation between two points is
Solution
When the wavelength of light used is comparable with the separation between two points, the image of the object will be a \(\phi \) diffraction pattern whose size will be
\(\theta = \frac{{1.22\lambda }}{D}\)
where \(\lambda \) = wavelength of light used
\(D\) = diameter of the objective
Two objects whose images are closer than this distance, will not be resolved.