Apane of glass is spray painted so as to be opaque; then, a razor is used to create one slash 0.50mm wide through the paint. calculate the width of the middle bright spot if a laser light of wavelength 650nm passes through the slash on to a wall 2.0m from the slash. a. 2.0mm b.2.3mm c.2.6mm d.5.3mm e. 8.8mm

width of the middle bright spot = 2.6 mm

Explanation:

given data

wide d  = 0.50 mm = 0.50 × m

wavelength = 650 nm = 650  × 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  ×  × 2  / 0.50 ×

width of the middle bright spot = 2.6  ×  m

so width of the middle bright spot = 2.6 mm

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