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  4. In the case of diffraction pattern due to a single slit, angular width of central max can be increased by

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Q. In the case of diffraction pattern due to a single slit, angular width of central max can be increased by

COMEDKCOMEDK 2008Wave Optics

Solution:

In case of single slit diffraction angular width of central maxima is given by $\theta = \frac{2 \lambda}{a} $
where a = width of slit,
$\, \, \, \, \, \, \, \lambda = $ wavelength of light
$ \theta $ can be increased by decreasing $a$.