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Following Color Through Two Model Beams 4 questions
Following Color Through Two Model Beams
Base your answers on the information provided and your knowledge of chemistry. Use the 2025 Chemistry Reference Tables as needed.
A classroom display sends two beams into the same detector. The detector has independent channels for red and blue light. Its counts for each color add when the beams are combined. A clear model filter can reduce one color in one beam before combination.
| Beam | Red counts in one second | Blue counts in one second |
|---|---|---|
| P | 12 | 4 |
| Q | 3 | 13 |
Question 1
How many blue counts should the detector record in one second with both beams and no filter?
- 4
- 13
- 15
- 17
A filter in beam Q passes half of its blue signal and all of its red signal. In the model, the indicator turns on only when the expected rates are at least 11 red counts/s and at least 11 blue counts/s.
Question 2
Calculate the two expected detector rates with the filter in beam Q. Treat the expected rates as averages over repeated measurements.
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Question 3
Use the expected rates to determine whether the filtered combined beam meets both indicator conditions.
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Question 4
If the same filter moves from beam Q to beam P, predict whether the indicator conditions will be met. Explain what changes about the blue rate.
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