Optics Question 859
Question: A broad source of light (I= 680 nm) illuminates normally two glass plates 120 mm long that touch at one end and are separated by a wire 0.034 mm in diameter at the other end. The total number of bright fringes that appear over the 120 mm distance is-
Options:
A) 50
B) 100
C) 200
D) 400
Show Answer
Answer:
Correct Answer: B
Solution:
[b] Constructive interference happens when
The minimum value for m=is m=1, the maximum value is the integer portion of
