Question

Diffraction pattern on a single slite of width
0.5 cm is formed by a lens of focal
length 40cm, Calculate b/w the first
dark fringe new fringe from the A=4850 A​

Answer 1

Ist minima at LemdaD/a

1st minima = 3.88 × 10^-5

Ist Maxima at 3lemdaD/2a

1st Maxima = 5.82 × 10^-5

Distance b/w

LemdaD/2a

1.94 × 10^-5

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