Answer:
y = 162.5 mm
Explanation:
given,
wavelength of the laser, λ = 650 nm
width of the slit, a = 0.04 mm
distance, D = 10 m
now, distance apart the minima is equal to
[tex]y =\dfrac{\lambda D}{d}[/tex]
[tex]y =\dfrac{650 \times 10^{-9}\times 10}{4 \times 10^{-5}}[/tex]
y = 0.1625 m
y = 162.5 mm
minima is 162.5 mm apart.
