Question:s 1. How would be the pattern on the screen if a thin wire on wide open

Question

Question:s 1. How would be the pattern on the screen if a thin wire on wide open slide is used instead of the 2. Discuss the possible sources of error that contribute to the percent errors in your experimentally- 3. For a given pair of slits, how does the pattern alter if one switches from a higher- laser (say 4. What will happen in the two-slit pattern obtained in your experiment, (i) if the slit width (D) is thin opening (slit) in Part I? determined values of d and D red) to a lower- say, green) laser? reduced keeping the distance between the slits (d) same? And (ii) if the distance between the slits (d) is reduced keeping the slit width (D) same? Explain with diagrams. 5. In your experiments, the slits are placed vertically. How would be the pattern on the screen with two-slit if another two-slit is overlapped horizontally? 6. What do you think will happen in the interference pattern if you keep adding slits at the same separation d?

Explanation / Answer

1. There would be a single black line on the screen, whose edges will be blurred due to diffraction.

2. The possible sources of error are the measurement scales, wrong measurement of the distances, using wrong units, etc.

3. For higher wavelength the spacing will increase as y is directly propotional to the wavelength.

4.D is directly propotional to y

So reducing D will contract the diffraction pattern.

d is inversely proptional to y

So reducing d will expand the diffraction pattern further.

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