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If $\mathrm{I}_0$ is the intensity of the principal maximum in the single slit diffraction pattern, then what will be the intensity when the slit width is doubled?
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The correct answer is:
$\mathrm{I}_0$
The slit width has no effect on the intensity of the principal maximum in the single-slit diffraction pattern.
$\therefore \quad$ The intensity will be same, $\mathrm{I}_0$.
$\therefore \quad$ The intensity will be same, $\mathrm{I}_0$.
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