Astudent performing a double-slit experiment is using a green laser with a wavelength of 550 nm. she is confused when the m = 5 maximum does not appear. she had predicted that this bright fringe would be 1.6 cm from the central maximum on a screen 1.5 m behind the slits. what is the width of her slits?

d = 52 μm

Explanation:

given,

wavelength of the light source (λ)= 550 nm

distance to form interference pattern(D) = 1.5 m

y = 1.6 cm = 0.016 m

width of the slits = ?

now, using displacement formula

for the first maxima, m = 1

       d = 5.2 x 10⁻⁶ m

       d = 52 μm

hence, the width of her slits is equal to d = 52 μm

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