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  4. The angular width of the central maximum of the diffraction pattern in a single slit of width a experiment, with λ as the wavelength of light, is

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Q. The angular width of the central maximum of the diffraction pattern in a single slit of width a experiment, with $ \lambda $ as the wavelength of light, is

Jharkhand CECEJharkhand CECE 2010Wave Optics

Solution:

The central maxima lies between the first minima on both sides.
The angular width of central maxima
$=2 \theta=\frac{2 \lambda}{a}$.

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