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The lenses used in refracting telescopes can cause chromatic aberration - AQA - A-Level Physics - Question 1 - 2019 - Paper 4
Question 1
The lenses used in refracting telescopes can cause chromatic aberration. Complete Figure 1 to show how a lens produces chromatic aberration. Figure 1 white light ... show full transcript
Worked Solution & Example Answer:The lenses used in refracting telescopes can cause chromatic aberration - AQA - A-Level Physics - Question 1 - 2019 - Paper 4
Step 1
Complete Figure 1 to show how a lens produces chromatic aberration.
Answer
To illustrate how a lens causes chromatic aberration, draw two rays of light entering a lens from a source of white light. These rays should converge at different focal points, with the blue ray focusing closer to the lens than the red ray. Indicate the red ray diverging less than the blue ray to show the different paths taken due to their varying wavelengths.