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# Diffraction by a Single Slit Multiple Choice Questions (MCQ) PDF Download

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The Diffraction by a Single Slit Multiple Choice Questions (MCQ Quiz) with Answers PDF, Diffraction by a Single Slit MCQ PDF e-Book download to practice Engineering Physics Tests. Learn Optical Diffraction Multiple Choice Questions and Answers (MCQs), Diffraction by a Single Slit quiz answers PDF for online certificate programs. The Diffraction by a Single Slit MCQ App: Free download learning app for gratings: dispersion and resolving power, diffraction by a single slit, x-ray diffraction, circular aperture diffraction test prep to learn free online courses.

The MCQ: If a slit of width 'a' is illuminated by white light, then value of 'a' at which first minimum for red light of wavelength 650 nm appears at θ=15°, is; "Diffraction by a Single Slit" App Download (Free) with answers: 25 µm; 2.5 µm; 250 µm; 25 m; for online certificate programs. Practice Diffraction by a Single Slit Quiz Questions, download Google e-Book (Free Sample) for free career test.

## Diffraction by a Single Slit MCQs: Questions and Answers

MCQ 1:

If wave's first side diffraction maximum is 15° and is coinciding with first minimum of red light, then wavelength of light is

1. 430 nm
2. 120 nm
3. 350 nm
4. 1200 nm
MCQ 2:

If a slit of width 'a' is illuminated by white light, then value of 'a' at which the first minimum for red light of wavelength 650 nm appears at θ=15°, is

1. 25 µm
2. 2.5 µm
3. 250 µm
4. 25 m
MCQ 3:

If 'a' is single slit width and θ is angle of first dark fringle, then path length difference in single slit diffraction is equals to

1. asinθ
2. acosθ
3. atanθ
4. acotθ
MCQ 4:

In a single slit diffraction experiment, dark fringles are produced where the path length differences between top and bottom rays are

1. 90° shift with each other
2. 180° shift with each other
3. 120° shift with each other
4. equal

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