Q122. In Fresnel diffraction, which is observed when the light source or screen is at a finite distance from an obstacle, the intensity at a point on the screen primarily depends on:Physics — NUST Mock By IBAGRADS 5 — Question 122 of 200A. The focal length of a lens used for observationB. The number of half-period zones that superpose at the pointC. The square of the sum of the number of half-period zonesD. The thickness of the obstaclePractice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →