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

Question

Quizplus · Accepted Answer

The number of bright fringes seen in the central maximum is given by:$$N = \frac{d}{\lambda} = \frac{0.05 	ext{ mm}}{500 	imes 10^{-9} 	ext{ m}} = 100$$Therefore, the number of bright fringes seen in the central maximum is 4.

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

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