Which of these statements describing a disadvantage of large refracting telescopes when compared to large reflecting telescopes is NOT correct?
A) Sagging of the primary optical element under its own weight is a problem with refracting telescopes but not with reflecting telescopes.
B) Refracting telescopes suffer from chromatic aberration, whereas reflecting telescopes do not.
C) Refracting telescopes can suffer from spherical aberration, whereas reflecting telescopes cannot.
D) Air bubbles in the glass are more of a problem in refracting telescopes than in reflecting telescopes.

Question

Quizplus · Accepted Answer

Reflecting telescopes can also suffer from spherical aberration, just like refracting telescopes. The difference lies in how each type of telescope deals with or minimizes such aberrations, not in the complete absence of the issue in one type.

Which of These Statements Describing a Disadvantage of Large Refracting