AP Physics · AP2-6 · structured
Double-slit fringe spacing 8
AP Physics 2 · Wave and physical optics · Original GioPhysics question with a detailed, mark-by-mark answer guide.
- Demand
- routine
- Marks
- 4
- Topics
- 2
- Answer
- Complete
Question4 marks
Monochromatic light of wavelength 5.70 × 10-7 m passes through two narrow slits separated by 3.30 × 10-4 m. A screen is 2 m away. Find the spacing between adjacent bright fringes in the small-angle approximation.
Task interpretation
What a complete response should do
Build a visible chain from the information given to the quantity or statement requested.
Name the standard relationship first, keep units attached, and show the substitution before the result.
- Response type
- structured
- Allocation
- 4 marks
- Demand
- routine
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Use your answer and the marking steps—not confidence alone—to choose.