- #1
Kris1120
- 42
- 0
Homework Statement
A screen is illuminated by monochromatic
light.
The distance from the slits to the screen is
7.4 m.
What is the wave length if the distance from the central bright region to the fourth
dark fringe is 2.6 cm.
Answer in units of nm.
Homework Equations
x=L*tan(theta)
sin(theta)=(m+.5) lambda/d
The Attempt at a Solution
theta= inverse tan( 2.6e-2 / 7.4) = .201309
lambda = (.55e-3) sin(.201309) / 4.5 = 429.427 nm