Question:medium

Two wavelengths of sodium light $590 \text{ nm}$ and $596 \text{ nm}$ are used one after another to study diffraction due to single slit of aperture $2 \times 10^{-6} \text{ m}$. The distance between the slit and the screen is $1.5 \text{ m}$. The separation between the positions of first maximum of the diffraction pattern obtained in the two cases is

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The first secondary maximum occurs when the path difference is approximately $1.5 \lambda$.
Updated On: Apr 28, 2026
  • $5.5 \text{ mm}$
  • $5.75 \text{ mm}$
  • $6.25 \text{ mm}$
  • $6.75 \text{ mm}$
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The Correct Option is A

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