By one wire diffraction pattern is obtained, if we increase the diameter of wire then fringe width:

CONCEPT:

• Single Slit Experiment: The diffraction or bending phenomenon of light in which light from a coherent source interfere with itself and produce a distinctive pattern on the screen called the diffraction pattern.
  • In single slit diffraction, the light that passes through a single slit is on the order of the wavelength of the light.
  • The diffraction pattern on the screen will be at a distance D away from the slit.

• The fringe width is found using the given formula:

\(\Rightarrow \beta =\frac{\lambda D}{d}\)

where λ = wavelength of light, D = distance between the screen and slit, and d = width of the slit.

EXPLANATION:

• The fringe width is found using the given formula:

\(\Rightarrow \beta =\frac{\lambda D}{d}\)

• From the above equation, it is clear that the fringe width is inversely proportional to the width of the slit. So, if we increase the diameter of the wire that means we are increasing the width of the slit, hence fringe width decreases.