Two Slits of Width a = 0 $\lambda$ = 500 NmThe Number of Bright Fringes Seen in the Central Maximum

Multiple Choice

Two slits of width a = 0.020 mm are separated by a distance d = 0.05 mm and illuminated by light of wavelength $\lambda$ = 500 nm.The number of bright fringes seen in the central maximum is

A) 2.5
B) 3
C) 4
D) 5
E) 6