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Homework Statement
a)Yellow light Lambda= 589nm falls on a double slit. The distance between two slits is d=0.5 mm the width of each slit is a=100 micrometer. A screen showing the interference pattern is located 4 m behind the slits.
Homework Equations
What is the distance between the first and the second maximum on the screen ?
The Attempt at a Solution
To calculate the distance
tan theta1 = X1 / L
tan theta2 = X2/ L
X2 - X1 = is the answer ?
Is this right ? If it is , how can i calculate theta1 and theta2 ?
Thanks