Questions
In the experiment of diffraction at a single slit, if the slit width is decreased, the width of the central maximum
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By Expert Faculty of Sri Chaitanya
a
Increases in both Fresnel and Fraunhofer diffraction
b
Decreases both in Fresnal and Fraunhofer diffraction
c
Increases in Fresnel diffraction but decreases in Fraunhofer diffraction
d
Decreases in Fresnel diffraction but increases is Fraunofer diffraction
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Correct option is A
Width of central maximum inversely proportional to width of slit.
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Light is incident normally on a diffraction grating through which the first order diffraction is seen at 32°. The second order diffraction will be seen at
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