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Standard XII

Physics

Angular Position of Fringes in Diffraction

in YDSE two p...

Question

in YDSE two pin holes are seperated by a dis†an ce 2.5 lambda where lambda ia wavelength of light. initial phase difference is zero. a screen is placed perpendicular to line joining two pin holes. at the centre of screen . we obtain 1. a minima 2. a maxima 3. neither maxima nor minima 4. information not sufficient

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Similar questions

Q. In a YDSE,

D = 1 m, d = 1 m m

and

λ = 1 / 2 m m

Find the no of maxima and minima obtain on the screen.

Q. In a YDSE, if the incident light consists of two wavelengths

λ_{1}

and

λ_{2}

, the slit separation is

d

, and the distance between the slit and the screen is

D

, the maxima due to each wavelength will coincide at a distance from the central maxima, given by

Q. Two point monochromatic and coherent sources of light of wavelength

λ

are placed on the dotted line in front of a large screen. The source emit waves in phase with each other. The distance between

S_{1}

and

S_{2}

^{'} d^{'}

while their distance from the screen is much larger. Then,,
(a) If

d = 7 λ / 2

O

will be minima
(b) If

d = 4.3 λ

, there will be total of

8

minima on y-axis
(c) If

d = 7 λ

O

will be maxima.
(d) If

d = λ

, there will be only one maxima on the screen.
Which is the set of correct statement:

A monochromatic light of wavelength λ is incident normally on a narrow slit of width 'a' to produce a diffraction pattern on the screen placed at a distance 'D' from the slit. With the help of relevant diagram, deduce the conditions for obtaining maxima and minima on the screen.

Q. Two coherent narrow slits emitting light of wavelength

λ

in the same phase, are placed parallel to each other at a small separation of

3 λ

. The light is collected on a screen

S

which is placed at a distance

D (>> λ)

from the slits. The smallest distance

x

such that the

P

is a maxima.

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