University:
Santa Fe College
Course:
ETS 2527C | Electromechanical Components and Mechanisms
Academic year:

2024
Views:

453

Pages:

5
Author:

Jabin F.

Page 1: Fringe Width (w): For mth maxima: Zm = mλD/d For (m+1)th maxima: Zm+1 = (m+1)λD/d W = Zm+1 - Zm = λD/d Page 2: Question 31: For maximum interference: (k1 - k2) · r = 2mπ (option-b) Question 34: After superposition: Emax = (Eot + Eoi) Emin = (Eot - Eoi) I = E0^2 (optical) Page 1: Eoi + Eor = S Eoi - Eor = S Eoi + Eor = SEoi - SEor 4Eoi = 6Eor Eoi/Eor = 6/4 = 3/2 Ior/Ioi = (Eor/Eoi)^2 = 4/9 (option-a) Page 2: Question 42: For Bright fringe: cosθ = +1 (option-a) wrong For bright fringe: (Eoi + Eor)^2 (option-b) wrong For dark fringe: cosθ = -1 (option-c) wrong For dark fringe: (Eoi - Eor)^2 (option-d) right Question 43: There is a diagram, but the content is unclear. Page 1: For bright fringe: (Eoi + Eor)^2 (option-b) wrong. For dark fringe: cosθ = -1 (option-c) wrong. For dark fringe: (Eoi - Eor)^2 (option-d) right. Page 2: Question 43: If there is no plate, then path difference is zero (bright fringe). For path length: √(D^2 + L^2) For path length with plate: √(D^2 + L^2) + μt - t Putting √(D^2 + L^2) + μt - t = √(D^2 + L^2) + λ/2 Simplifying: (μ-1)t = λ/2 t = λ/(2(μ-1)) (option-e)