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Grade 11 · unit review

Review: Wave Optics and Resolution

Calculate wave and ray quantities and distinguish model assumptions.

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Bring the unit skills together

Use these 4 new cases to check your reasoning. Choices are temporary and are not saved to an account, sent to staff or recorded as school grades. Download your current review choices before leaving or reloading.

Unit review questions
1. Supplied case 5: wave speed (m/s)=48; frequency (Hz)=12, using the explicitly named quantities. Wavelength in meters equals wave speed in meters per second divided by frequency in hertz. What result follows?
Need a hint?
  • Wavelength in meters equals wave speed in meters per second divided by frequency in hertz.
  • Frequency is not the wave’s spatial separation.
2. Supplied case 5: incidence angle from normal (degrees)=55, using the explicitly named quantities. Reflection angle from the normal equals supplied incidence angle from the normal. What result follows?
Need a hint?
  • Reflection angle from the normal equals supplied incidence angle from the normal.
  • The normal is perpendicular to the surface.
3. Which interference phenomenon describes the local reinforcement or cancellation? Supplied case: Equal downward displacements reinforce.
Need a hint?
  • Look for the described feature: displacements reinforce at this point.
  • Compare the given mechanism with the other labels; do not infer unmentioned events.
4. Which scientific label fits the specifically described step or feature? Supplied case: Enlargement changes display size.
Need a hint?
  • Look for the described feature: image enlargement.
  • Compare the given mechanism with the other labels; do not infer unmentioned events.

The download contains your current choices and any checked feedback. Keep the separate transfer-task work in your own document; downloading its instructions does not mark it complete.

Use the skills in a new task

Create a four-panel explanation for “Wave Optics and Resolution” using one supplied case from each lesson. Include the observation, scientific mechanism or calculation, result and a limitation. You may draw and speak your explanation; all inputs are supplied.

Work on paper or in your own document. Explain the choices you made.

  • Use one supplied case from each of the four lessons.
  • Name the relevant structure, quantity or process in every panel.
  • Show calculations with units or a causal evidence chain.
  • Distinguish source facts from fictional classroom data.
  • State a model limit or a condition that would change the result.
Compare with a model response

Panel 1: Supplied case 1: wave speed (m/s)=24; frequency (Hz)=6, using the explicitly named quantities. Wavelength in meters equals wave speed in meters per second divided by frequency in hertz. What result follows? Result: 4 m. Reasoning: Substitute the supplied values: (24)/(6) = 4 m. Use a fixed specified propagation speed. These generic model speeds are not light speed. Model limitation: only the stated classroom boundary and supplied observations are established; unmeasured real-world performance remains unverified. Panel 2: Supplied case 1: incidence angle from normal (degrees)=15, using the explicitly named quantities. Reflection angle from the normal equals supplied incidence angle from the normal. What result follows? Result: 15 degrees. Reasoning: Substitute the supplied values: (15) = 15 degrees. Measure both angles from the normal. Do not measure one angle from the surface and the other from normal. Model limitation: only the stated classroom boundary and supplied observations are established; unmeasured real-world performance remains unverified. Panel 3: At one point two simultaneous displacements are+2 and+5 mm. What is predicted? Which inference or prediction is best supported? Result: They combine to+7 mm by constructive interference at that point.. Reasoning: Superposition adds signed contributions; same-sign displacements reinforce locally. Model limitation: only the stated classroom boundary and supplied observations are established; unmeasured real-world performance remains unverified. Panel 4: A blurred image is printed three times larger with no new data. What is warranted? Which inference or prediction is best supported? Result: Display magnification increases, but unresolved detail is not automatically recovered.. Reasoning: Magnification changes display scale; resolving separate features needs suitable measurement evidence. Model limitation: only the stated classroom boundary and supplied observations are established; unmeasured real-world performance remains unverified.

A different response can also meet the criteria. Compare the evidence and reasoning, rather than copying the wording.