Ramon has a coherent light source with wavelength 521 nm. He wishes to send light through a double slit with slit separation of 1.50 mm to a screen 90.0 cm away. What is the minimum width of the screen if Ramon wants to display three interference maxima?
lambda = 521 nm
d= 1.5 mm
D = 90 cm
three maximas => 2 maximas on either side of the central
maxima.
distance of the first maxima from the central maxima (y) =
lambda*D/d
= 521x10^(-9) * 90x10^(-2)/1.5x10^(-3) = 3.13 x10^-4 m = 0.313
mm
hence the screen should be 2*.313 mm = .626 mm to get 3 maximas
Ramon has a coherent light source with wavelength 521 nm. He wishes to send light through...
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