Answer:
width of the middle bright spot = 2.6 mm
Explanation:
given data
wide d = 0.50 mm = 0.50 ×[tex]10^{-3}[/tex] m
wavelength = 650 nm = 650 ×[tex]10^{-9}[/tex] m
wall D = 2 m
to find out
width of the middle bright spot
solution
we know width formula that is
width of the middle bright spot = wavelength ×D / d
put here all these value we get
width of the middle bright spot = wavelength ×D / d
width of the middle bright spot = 650 ×[tex]10^{-9}[/tex] × 2 / 0.50 ×[tex]10^{-3}[/tex]
width of the middle bright spot = 2.6 ×[tex]10^{-3}[/tex] m
so width of the middle bright spot = 2.6 mm
