Kcet
Wave Optics
KCET 2021
MCQ+1 / -02021
A slit of width \(a\) is illuminated by red light of wavelength \(6500 \mathop A\limits^o\). If the first diffraction minimum falls at \(30^{\circ}\), then the value of \(a\) is
Kcet
KCET 2021
A slit of width \(a\) is illuminated by red light of wavelength \(6500 \mathop A\limits^o\). If the first diffraction minimum falls at \(30^{\circ}\), then the value of \(a\) is