Hint | Answer | % Correct |
---|---|---|
Slit spacing (m) for a diffraction grating is equal to | 1 / number of lines per metre | 0%
|
How many beams are produced by a diffraction grating? | 2n+1 where n is the maximum beam order | 0%
|
What is a diffraction grating | A series of many, closely spaced parallel slits | 0%
|
What is the fringe pattern for a single slit | Central fringe is twice the width of all others. Outer fringes are much less intense than the central maximum. | 0%
|
What happens if white light is used in the two slit experiment | Central fringe is white, inner fringes run have violet on the inside edge and red on the outside edge. | 0%
|
What produces a bright fringe | Constructive interference of the light from each slit | 0%
|
What produces a dark fringe | Destructive interference of the light from each slit | 0%
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What is the effect of decreasing wavelength at a single slit | Diffracted waves spread out less | 0%
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What is the effect of reducing the size of a single slit | Diffracted waves spread out more | 0%
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What is d in nλ=dsinθ | Distance between slits in a diffraction grating | 0%
|
what is s in w = λD/s | Distance between the double slits | 0%
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What is D in w = λD/s | Distance between the double slits and the screen | 0%
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What is the maximum beam order from a diffraction grating | d/λ (rounded down to the nearest whole number) | 0%
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What is w in w = λD/s | Fringe separation | 0%
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What produces a continuous spectrum of light | Hot objects such as filament lamps and the sun | 0%
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What is the effect of reducing the spacing of slits in a diffraction grating | Increases the angle of each beam | 0%
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What produces coherent, monochromatic light | Laser | 0%
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What was used by Young to provide coherent light for the two slits | Narrow single slit | 0%
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What is the path length difference between adjacent slits along the nth order beam | n wavelengths | 0%
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What is n in nλ=dsinθ | Order of the beam | 0%
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What is the path difference for destructive interference | path difference = (n+1/2)λ (where n is an integer, n=0,1,2,3,4...) | 0%
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What is the path difference for constructive interference | path difference = nλ (where n is an integer, n=0,1,2,3,4...) | 0%
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What is a coherent source of light | Same frequency and constant phase difference | 0%
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What is the fringe pattern for double slits | Spacing of fringes is constant (and intensity reduces gradually from the centre) | 0%
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What is a zero order beam | The central bright beam | 0%
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