Comedk
Wave Optics
COMEDK 2020
MCQ+1 / -02020
A plastic sheet (refractive index = 1 6. ) covers one
slit of a double slit arrangement for the Young’s
experiment. When the double slit is illuminated
by monochromatic light (wavelength = 5867 \(\mathop A\limits^o\)),
the centre of the screen appears dark rather
than bright. The minimum thickness of the
plastic sheet to be used for this to happen is