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15
×
In YDSE, what happens to fringe width if the wavelength is doubled?
Fringe width also doubles.
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15
×
Which type of interference (constructive or destructive) results in a dark fringe?
Destructive interference.
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15
×
Which instrument uses a movable mirror to measure small path differences?
Michelsonโs Interferometer.
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15
×
What changes in Michelsonโs interferometer when the mirror is moved by 1 micron?
Two fringes shift (as path difference changes by 2 microns).
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lifesaver
Give 5 points!
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seesaw
Swap points!
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rocket
Go to first place!
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banana
Go to last place!
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15
×
What kind of wavefront does a point source produce in interference experiments?
Spherical wavefront.
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15
×
Which phenomenon causes the formation of bright and dark fringes in Newtonโs Rings?
Interference of reflected light.
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15
×
Why do we see circular fringes in Newtonโs ring setup instead of straight lines?
Due to symmetrical air film between lens and glass plate.
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lifesaver
Give 20 points!
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shark
Other team loses 15 points!
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gift
Win 10 points!
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thief
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15
×
Name the device that uses interference to precisely measure wavelengths of light.
Michelsonโs Interferometer.
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15
×
What is the condition for constructive interference in Youngโs Double Slit Experiment?
Path difference = nฮป, where n is an integer.
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15
×
What is the formula for fringe width in Young's Double Slit Experiment?
ฮฒ = ฮปD/d (where D = screen distance, d = slit separation)
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baam
Lose 5 points!
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magnet
Take 10 points!
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fairy
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25
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lifesaver
Give 25 points!
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trap
No points!
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shark
Other team loses 10 points!
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fairy
Take points!
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25
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thief
Give points!
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