Question

In a single diffraction pattern observed on a screen placed at D metre distance from the slit of width d meter, the ratio of width of the central Maxima to the width of the Other secondary Maxima is
A)2:1
B)1:2
C)1:1
D)3:1​

Answer 1

Answer:

2:1

Explanation:

Answer 2

The ratio of width of the central maxima to the width of the Other secondary maxima is A) 2 : 1

In the single diffraction pattern observed on a screen,

The distance of the screen from the slit = D m

Width of the slit = d m

Suppose, the wavelength of the light = λ

The central fringe width = 2 Dλ/d [As the angle formed is 2θ]

The width of the secondary maxima = Dλ/d [As the angle formed is θ]

So, the The ratio of width of the central maxima to the width of the Other secondary maxima is A) 2 : 1