Jee Main
Wave Optics
JEE Main 2023 (Online) 15th April Morning Shift
MCQ+4 / -12023
A single slit of width $a$ is illuminated by a monochromatic light of wavelength $600 \mathrm{~nm}$. The value of ' $a$ ' for which first minimum appears at $\theta=30^{\circ}$ on the screen will be :