First minimum: sinθ = λ/d.
Light of wavelength λ falls on a single slit of width d. The first minimum occurs at angle θ given by
JEE Advanced 2022 — Physics Optics
2022mcqmedium
Light of wavelength λ falls on a single slit of width d. The first minimum occurs at angle θ given by
Official previous-year question
Verified 30 May 2026.
Options
- Asinθ = λ/d
- Bsinθ = 2λ/d
- Csinθ = λ/2d
- Dsinθ = d/λ
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