How is Checking Two Filters in One Light Path structured on New Regents?

Track what reaches each filter to explain a stack reading and identify a departure from an independent-filter model. Every question is worth 1 raw credit and pairs with the 2025 Edition Reference Tables, automatic multiple-choice key checking, and step-by-step constructed-response scoring guidance.

Can I practice one phenomenon cluster at a time or sit the full exam?

Yes. In the New Regents workspace you can launch any individual 4–6 question cluster in Learn mode (with strategy prompts) or sit the complete examination in Exam mode, then review every answer against the official-style scoring guide.

Checking Two Filters in One Light Path with Answers (Free PDF)

5 original questions from New Regents. The worksheet, answer key, and browser practice are free.

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Checking Two Filters in One Light Path 5 questions

Checking Two Filters in One Light Path

Base your answers on the information provided and your knowledge of chemistry. Use the 2025 Chemistry Reference Tables as needed.

A lamp sends 100 units of light in band A and 100 units in band B toward two filter sheets. A sheet passes the stated fraction of the light reaching it in each band. In the independent-filter model, stacking sheets does not change either sheet’s own fraction.

Filter	Fraction of band A passed	Fraction of band B passed
P	0.80	0.50
Q	0.50	0.80

Question 1

With P first and Q second, how much band A light reaches Q?

20 units
40 units
50 units
80 units

Question 2

Calculate the amount of each band reaching the detector after both sheets.

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Question 3

A student says putting Q first will make band B brighter at the detector. Evaluate the claim in the independent-filter model.

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A stack trial gives 40 units in band A and 30 units in band B. A lamp check verifies the original input, and each sheet still gives the listed readings when tested by itself.

Question 4

Which part of the stack result conflicts with the independent-filter model? Explain why the final reading alone cannot locate the discrepancy within the stack.

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The class adds a probe between P and Q. The probe does not change the light path. It records 50 band B units reaching Q while the final detector still records 30.

Question 5

Calculate the fraction of the incoming band B light that gets past the second stage. Use it to identify where the measured light differs from the model.

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