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In a Young's double slit experiment, 12 fringes are observed to be formed in a certain segment of the screen when light of wavelength 600 nm is used. If the wavelength of light is changed to 400 nm, number of fringes observed in the same segment of the screen is given by

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Important Questions on Wave Optics

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Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>Assignment Set-2>Q 35
In YDSE, d=5λ, then the total no. of maxima observed upon screen will be
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Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>Assignment Set-2>Q 36
In diffraction using single slit, a slit of width a is illuminated by white light. For red light λ=6500 Å, the first minima is obtained for θ=30°. Then the value of a will be
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Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>Assignment Set-2>Q 37
The bending of beam of light around corners of obstacles is called
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Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>Assignment Set-2>Q 38
Angular width of central maximum of a diffraction pattern on a single slit does not depend upon
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Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>Assignment Set-2>Q 39
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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Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>Assignment Set-2>Q 40
When a compact disk is illuminated by a source of white light, coloured 'lenes' are observed. This is due to
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Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>Assignment Set-2>Q 42
To observe diffraction the size of an obstacle
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Gamma Question Bank for Engineering Physics>Chapter 25 - Wave Optics>Assignment Set-2>Q 43
In a single slit diffraction pattern