Adding a Secondary Concave Lens of Carefully Chosen Different Glass

question 24

Multiple Choice

Adding a secondary concave lens of carefully chosen different glass to the primary lens on a refractor allows

• A) chromatic aberration to be reduced.
• B) X- rays to be focused.
• C) more light to be gathered.
• D) greater magnification.
• E) effects of atmospheric turbulence to be reduced.

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