Answer:
option (c)
Explanation:
The relation between the distance between the fringes is given by
[tex]y = \frac{D\lambda }{d}[/tex]
where, D is the distance between the plane of slit and the screen
d is the width of slit, λ is the wavelength of light used.
As the slit made narrower, that means d decreases, the value of y increases, that means the fringes move farther.
