If the first minimum in Young's double-slit experiment occurs directly in front of…

PHYSICS · Single correct · CBSE · Physics · Wave Optics · Wave Optics

Problem

If the first minimum in Young's double-slit experiment occurs directly in front of one of the slits, with distance between the slit and screen

D=12\text{ cm}

and distance between the slits

d=5\text{ cm}

, then the wavelength of the radiation used is: (a) 2 cm only (b) 4 cm only (c) 2 cm,

\frac{2}{3}

cm,

\frac{2}{5}

cm (d) 4 cm,

\frac{4}{3}

cm,

\frac{4}{5}