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Chapter 33: Q. 36 (page 956)

FIGUREP33.36shows the light intensity on a screen behind a double slit. The slit spacing is 0.20mmand the wavelength of the light is 620nm. What is the distance from the slits to the screen?

Short Answer

Expert verified

The screen's length from the slits isL=1.61m.

Step by step solution

01

Step: 1 Screen slit:

The fringe width reduced as the slit spacing improved, indicating reduced interference. The fringe width rose as the distance between the slits and the wall improved, because the light would have more area to diffract outwards and so interfere more.

02

Step: 2 Finding spacing fringes:

The distance between any two subsequent fringes in a double slit experiment is provided by the following relation.

螖y=位Ld.

The spacing between five peaks is comparable to role="math" localid="1649086556897" 4鈭�yin FIGUREP33.36. As a result, the distance between any two consecutive fringes is

螖y=2cm4螖y=0.5cm.

03

Step: 3 Finding slit screen distance:

Distance of screen slit by

L=d螖y位L=0.2脳10鈭�3m脳0.5脳10鈭�2m620脳10鈭�9mL=1.61m.

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Most popular questions from this chapter

FIGURE P33.56shows the light intensity on a screen behind a single slit. The wavelength of the light is600nmand the slit width is 0.15mm. What is the distance from the slit to the screen?

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