Answer:
Explanation:
width of slits a = 1 x 10⁻² / 5150
= 1.941 x 10⁻⁶ m
angular position of first bright fringe = λ / a , λ is wavelength of light
= 633 x 10⁻⁹ / 1.941 x 10⁻⁶
= 326.12 x 10⁻³ radian
angular position of third bright fringe = 3 λ / a , λ is wavelength of light
= (3 x 633 x 10⁻⁹) / 1.941 x 10⁻⁶
= 978.36 x 10⁻³ radian
angular separation between the two
= 978.36 x 10⁻³ - 326.12 x 10⁻³
= 652.24 x 10⁻³ radian .
