## Related questions with answers

Use Dell's recommendation feature to select a laptop computer (hint: visit Dell website, select "small and medium business," then click on "laptop"). What decision rule or combination of rules does this decision aid reflect? What type of consumer would be most likely to utilize this adviser function?

A physics instructor wants to produce a double-slit interference pattern large enough for her class to see. For the size of the room, she decides that the distance between successive bright fringes on the screen should be at least $2.50 \mathrm{~cm}$. If the slits have a separation $d=0.0220 \mathrm{~mm}$, what is the minimum distance from the slits to the screen when $632.8 \mathrm{~nm}$ light from a $\mathrm{He}-\mathrm{Ne}$ laser is used?

Solution

VerifiedIn this problem, we are asked to calculate the distance between the slits and the screen in a two-slit interference pattern when a He-Ne laser light is used. The known values are given as follows:

$\begin{aligned} y & = 2.50\text{ cm} \approx 0.0250\text{ m}\\ d & = 0.0220\text{ mm} \approx 0.0220 \cdot 10^{-3}\text{ m} \\ \lambda & = 632.8\text{ nm} \approx 632.8 \cdot 10^{-9}\text{ m} \end{aligned}$

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