2025, Question 4 · Qualitative Quantitative Translation · 8 points · about 20 minutes
Double slit interference with colored light
Compare interference band positions for different wavelengths and derive the spacing between bands on a screen.
This paper allotted 100 minutes to its four free-response questions. The current exam has 4 free-response questions in 95 minutes. The skills these questions practice still count.
Lessons this question draws on
1 Read the question
The question is College Board's, from the 2025 exam. It starts on page 11 of the PDF.
Open Question 4 (PDF, page 11)
2 Write your answer
Answer each part the way you would on the exam, in full sentences, with your work shown. Your writing saves as you type.
3 Score it
Score your answer against College Board's scoring guidelines, one point at a time. Give yourself a point only when your answer says what the guideline asks for.
Scoring guidelines (PDF, page 11) What the exam readers saw (Chief Reader report)
Question, scoring guidelines and Chief Reader report: College Board. The title, summary are ours.