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Waves of wavelength are incident normally on a slit of width. The value of diffraction angle corresponding to the first minima will be (in radian),
(a)
(b)
(c)
(d)

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Important Questions on Wave Optics
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In Fraunhofer diffraction the centre diffraction image is

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Bending of light waves at the sharp edges of an opaque obstacle is known as

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Diffraction and interference of light refers to,

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The phenomenon of diffraction of light was discovered by,

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The angular width of central maximum of a diffraction pattern of a single slit does not depend upon,

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Red light is generally used to observe diffraction pattern from single slit If blue light is used instead of red light, then diffraction pattern

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Diffraction of sound waves is more evident than light waves in daily life because,

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In single slit Fraunhofer diffraction, which type of wavefront is required?
