- #1
erik-the-red
- 89
- 1
Question:
Coherent light with wavelength 400 nm passes through two very narrow slits that are separated by 0.200 mm and the interference pattern is observed on a screen 4.00 m from the slits.
A
What is the width (in mm) of the central interference maximum?
[tex]y_m = R \cdot \frac{m \cdot \lambda}{d}[/tex]
I thought I would get the width of the central interference maximum by doubling [tex]y_m = 4.00 \cdot \frac{4.00 \cdot 1 \cdot 4.00 \cdot 10^(-9)}{.00200} = .016[/tex].
That's not correct, though.
Why was my approach incorrect?
Coherent light with wavelength 400 nm passes through two very narrow slits that are separated by 0.200 mm and the interference pattern is observed on a screen 4.00 m from the slits.
A
What is the width (in mm) of the central interference maximum?
[tex]y_m = R \cdot \frac{m \cdot \lambda}{d}[/tex]
I thought I would get the width of the central interference maximum by doubling [tex]y_m = 4.00 \cdot \frac{4.00 \cdot 1 \cdot 4.00 \cdot 10^(-9)}{.00200} = .016[/tex].
That's not correct, though.
Why was my approach incorrect?