A parallel monochromatic beam of light is incident at an angle θ to the normal of a slit…
Physics · JEE Advanced · NTA Exams — Optics
A parallel monochromatic beam of light is incident at an angle θ to the normal of a slit of width e. The central point O of the screen will be dark if
- \(\mathrm{e} \sin \theta=\mathrm{n} \lambda\) where n = 1, 3, 5 ...
- \(\mathrm{e} \sin \theta=\mathrm{n} \lambda\) where n = 1, 2, 3 ...
- \(\operatorname{csin} \theta=2 n-1 \frac{\lambda}{2}\) where n = 1, 2, 3 ...
- \(\cos \theta=n \lambda\) where n = 1, 2, 3, 4 ...
Answer
(B) e = n where n = 1, 2, 3 ...
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