JEE Mains 2026 Solutions | Wave Optics | Jan 22 Shift 2 | Single Slit Diffraction Explained

Detailed solution for Question 43 from JEE Mains 2026 (22nd Jan, Shift 2) regarding Single Slit Diffraction.

🚀 Question:
Which of the following are true for a single slit diffraction?
A. Width of central maxima increases with increase in wavelength keeping slit width constant.
B. Width of central maxima increases with decrease in wavelength keeping slit width constant.
C. Width of central maxima increases with decrease in slit width at constant wavelength.
D. Width of central maxima increases with increase in slit width at constant wavelength.
E. Brightness of central maxima increases for decrease in wavelength at constant slit width.

Options:
1. B, D only
2. B, C only
3. A, D only
4. A, D, E only

📌 Note: In this video, we derive the formula for the width of the central maxima and analyze why the provided options might lead to the question being dropped.

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🕒 Timestamps:
0:00 - Introduction & Question Analysis
1:00 - Deriving Position of 1st Minima
1:30 - Formula for Width of Central Maxima (2Dλ/b)
1:40 - Proportionality of λ and b
2:00 - Final Conclusion & Option Analysis
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Видео JEE Mains 2026 Solutions | Wave Optics | Jan 22 Shift 2 | Single Slit Diffraction Explained канала Physics Unlocked ⚛🔓