Question

For a parallel beam of monochromatic light of wavelength
'????', diffraction is produced by a single slit whose width 'a' is
of the wavelength of the light. If 'D' is the distance of the
screen from the slit, the width of the central maxima will be:
[2015]
(a) D????/a
(b) Da/????
(c) 2Da/????
(d) 2D????/a

Answer 1

Answer:

b) Da/????

pls mark as the brainliest answer

Answer 2

Answer:

2Da????/a is the answer

BECAUSE IT IS PARALLEL SO IT IS 2 .

AND AFTER ????/a.

HOPE IT HELPS YOU