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The distance between two slits in a double-slit interference experiment is 2.1´ 10 –3 mm. A first-order bright fringe is detected at an angle of 17.0° from the central maximum. a) What is the...

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The distance between two slits in a double-slit interference experiment is 2.1´ 10–3 mm. A first-order bright fringe is detected at an angle of 17.0° from the central maximum.
a) What is the wavelength of the light?
b) Is this light visible to humans? If so, what color would it be?
Answered Same Day Dec 25, 2021

Solution

Robert answered on Dec 25 2021
123 Votes
Let the distance between the slits be “d”.
d = 2.1 * 10 ^ (-3) mm = 2.1 * 10 ^ (-6) m
Let the distance between the screen and the slits be D.
Since the angle is small so if the angle is x then
Sin x = tan x
Let the fringe width be B
B/D = tan x
X = 17 degrees
Let wavelength of light...
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