Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Slit 1 of a double slit is wider than slit 2
PHYSICS · Subjective · A Level · Physics · Waves · Waves
Problem
Slit 1 of a double slit is wider than slit 2, so that the light from slit 1 has an amplitude three times that of the light from slit 2. Show that the equation
I
=
I
max
cos
2
ϕ
2
I=I_{\max}\cos^2\frac{\phi}{2}
I
=
I
m
a
x
cos
2
2
ϕ
is replaced by
I
=
(
I
max
4
)
(
1
+
3
cos
2
ϕ
2
)
.
I=\left(\frac{I_{\max}}{4}\right)\left(1+3\cos^2\frac{\phi}{2}\right).
I
=
(
4
I
m
a
x
)
(
1
+
3
cos
2
2
ϕ
)
.
Related theory
Wave Superposition
Young's Double-Slit Experiment
Interference
Optics
Interference of light and Young's experiment
Wave Optics
Waves
Browse the problem library