State the characteristics of a single-slit diffraction pattern.

1.	State the characteristics of a single-slit diffraction pattern.
Answer» Characteristics of a single-slit diffraction pattern : 1. The image cast by a single-slit is not the expected purely geometrical image. 2. For a given wavelength, the width of the diffraction pattern is inversely proportional to the slit width. 3. For a given slit width a, the width of the diffraction pattern is proportional to the wavelength. 4. The intensities of the non-central, i.e., secondary, maxima are much less than the intensity of the central maximum. 5. The minima and the non-central maxima are of the same width, Dλ/a. 6. The width of the central maximum is 2Dλ/a. It is twice the width of the noncentral maxima or minima.

Answer»

Characteristics of a single-slit diffraction pattern :

1. The image cast by a single-slit is not the expected purely geometrical image.

2. For a given wavelength, the width of the diffraction pattern is inversely proportional to the slit width.

3. For a given slit width a, the width of the diffraction pattern is proportional to the wavelength.

4. The intensities of the non-central, i.e., secondary, maxima are much less than the intensity of the central maximum.

5. The minima and the non-central maxima are of the same width, Dλ/a.

6. The width of the central maximum is 2Dλ/a. It is twice the width of the noncentral maxima or minima.

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