Homework Answers
A)Number of bright spots will increase as for constructive interference the condition is
dsinA=mW, d is slit width ,A is angle of incidence , m is order of bright fringe, W is wavelength of light , so when d increase, all other qualities remain constant except m, as m will increase to maintain the equality.
B) size of the bright spots will decrease ,
Width of central maxima is given by w= 2fW/d,
f is focal length of lense between slit and screen,
Since is d is increased then w will decrease. As width of central maxima is decreasing so width of all other maximas will also decrease
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interference and diffraction lab
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How do I calculate slit width and slit separation?
How do I calculate slit width and slit
separation?
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A double slit aperture is illuminated by light of wavelength 530nm and the interference pattern is observed on a screen 5.00m away. The slits are 2.125fim width and are separated by 0.1mm. How far apart are the first and second bright fringes? How far apart are the first and second dark fringes? Determine the slit to screen distance required such that the width of the central peak of the diffraction pattern is 1 m. Why is the calculation from part...
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*Question 246: Interference/Diffraction Two Slits A two slit Fraunhoffer diffraction-interference pattern is observed with light of wavelength 700 nm. The slits have a width a = 0.01 mm and a separation d = 0.2 mm. How many bright fringes will be seen in the central diffraction maximum? Select one a. 38 b. 19 ec. 20 d. 3 e. 39
Suppose Young's double slit experiment is performed in air using red light and the interference pattern is shown on a screen. You then submerge the entire setup into water. What happens to the interference pattern? It disappears. The bright fringes are farther apart. The bright and dark fringes stay in the same locations but the contrast is reduced. No change happens in the interference pattern. The bright fringes are closer together.
How do I calculate slit width and slit
separation?
TA's initials: Lab Partner: Diffraction and Interference Data Sheet Sketch of diffraction pattern: Table la Sensor Position 105m 0Marked Silit width - 0.04 Slit Position2.00 or Distance Location of Intensity Minima Left of Central | Right of Central | Average Order ½(XR-XL) Min. Cem) m- 1 5.50 um 5.51 5.51 w m 3 Table 1b Order m=1 m=2 m-3 Average Computed Slit Width 90 difference Observation: Describe how the diffraction pattern...
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