Saved Bookmarks
| 1. |
In a Young's double slit experiment, the slits are placed 0.320 mm apart. Light of wavelength λ = 500 nm is incident on the slits. The total number of bright fringes that are observed in the angular range -30° ≤ θ ≤ 30° is: (1) 320 (2) 641 (3) 321 (4) 640 |
|
Answer» The correct option (2) 641 Explanation: dSinθ = nλ(θ = 30°) => n = 320 So, Number of maxima (Including central maxima) = 2n + 1 = 641 |
|