Concept explainers
Two slits are separated by 0.320 mm. A beam of 500-nm light strikes the slits, producing an interference pattern. Determine the number of maxima observed in the angular range −30.0° < θ < 30.0°.
The number of maxima observed in angular range
Answer to Problem 1P
The number of maxima observed in the angular range
Explanation of Solution
Given info: The two slits are separated by a distance of
The diagram is shown as
Figure 1
Consider there are
The formula to calculate the interference is as,
Here,
Rearrange the above formula to find
Substitute
The approximate value of
The maxima are used for bright fringe and minima for dark fringe. Thus, the total number of fringes (bright and dark) in the angular separation from
Conclusion:
Therefore, the number of maxima observed in the angular range
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Chapter 36 Solutions
Physics for Scientists and Engineers with Modern Physics
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