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The dispersive power of a plane transmission diffraction grating

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Important Questions on Wave Optics

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Achieve CUET (UG) Physics Practice Book>Chapter 10 - Wave Optics>Exercise>Q 83
In the diffraction pattern of a single slit aperture, the width of the central fringe compared to the widths of the other fringes is,
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Achieve CUET (UG) Physics Practice Book>Chapter 10 - Wave Optics>Exercise>Q 84

The central fringe obtained in diffraction pattern due to a single slit,

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Achieve CUET (UG) Physics Practice Book>Chapter 10 - Wave Optics>Exercise>Q 86
Dark regions in the single slit diffraction patterns are not the:
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Achieve CUET (UG) Physics Practice Book>Chapter 10 - Wave Optics>Exercise>Q 87
In a single slit diffraction experiment, the width of the slit is made double its original width. Then the central maximum of the diffraction pattern will become
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Achieve CUET (UG) Physics Practice Book>Chapter 10 - Wave Optics>Exercise>Q 88
The red light of the wavelength 6500 A∘ from a distant source falls on a slit 0.50 mm wide. What is the distance between the first two dark bands on each side of the central bright of the diffraction pattern observed on a screen placed 1.8 m from the slit?
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Achieve CUET (UG) Physics Practice Book>Chapter 10 - Wave Optics>Exercise>Q 89
While both light and sound show wave character, diffraction is much harder to observe in light. This is because:
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Achieve CUET (UG) Physics Practice Book>Chapter 10 - Wave Optics>Exercise>Q 90
In a single slit diffraction experiment first minima for λ1=660 nm coincides with the first maxima for wavelength λ2. Calculate λ2.
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Achieve CUET (UG) Physics Practice Book>Chapter 10 - Wave Optics>Exercise>Q 91
In a Fraunhofer's diffraction by a slit, if slit width is a, wavelength λ, the focal length of the lens is f, then linear width of central maxima is