Question

In Young's double slit experiment theseparation d between the slits is 2 mm, thewavelength λ of the light used is 5896 Å anddistance D between the screen and slits is100 cm. It is found that the angular width ofthe fringes is 0.20°. To increase the fringeangular width to 0.21° (with same λ and D) theseparation between the slits needs to bechanged to
(1) 2.1 mm (2) 1.9 mm
(3) 1.8 mm (4) 1.7 mm

Answer 1

Answer:

1. will be the correct answer