In the young double slit experiment initially equal intensities are coming out of the two slits S and S now.

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Assuming that the intensity of light coming out of each slit is equal, when a phase difference is introduced between them, the resultant intensity at any point on the screen will depend on the phase difference between the two waves.

Let's consider the two waves coming out of S and S' as A and B respectively. The intensity of the combined wave can be given by:

I = I₁ + I₂ + 2√(I₁*I₂)cos(δ)

where I₁ and I₂ are the intensities of A and B respectively, and δ is the phase difference between them.

If the phase difference δ is a multiple of π (i.e. δ = 0, π, 2π, etc.), the cosine term becomes +1 and the resultant intensity is maximum. These points on the screen where the intensity is maximum are called interference maxima.

Now, if the phase difference between the two waves is changed, the locations of the interference maxima will also change. If the phase difference changes by π, the intensity at the interference maxima will decrease to zero. This is because the cosine term in the above equation becomes -1.

Therefore, if initially, the intensities of the two waves coming out of S and S' are equal, the interference maxima will be observed at regular intervals on the screen. But if the phase difference between them is changed, the intensity at these interference maxima will change accordingly.

In the young double slit experiment initially equal intensities are coming out of the two slits S and S now.

In the young double slit experiment initially, equal intensities are coming out of the two slits S and S now

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In young double slit experiment initially equal intensities are coming out of the two slits S and S now.

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In young double slit experiment initially equal intensities are coming out of the two slits S and S now.

CBSE CLASS XII Related Questions

2.With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

5.A student sets up the circuit as shown in the figure to find the value of unknown resistance X and records a set of readings of the voltmeter and the ammeter by using the rheostat.

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

2.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

5.
A student sets up the circuit as shown in the figure to find the value of unknown resistance X and records a set of readings of the voltmeter and the ammeter by using the rheostat.