Lenses Are Used in Applications Like Microscopes and Telescopes

Lenses are used in applications like microscopes and telescopes. What does a lens do in these applications?

A) Lenses sort out the entering light by color (or wavelength) and absorb the colors not required for the image.
B) A lens captures all the light emitted by a source and focuses it to form an image.
C) A lens reduces the chromatic aberration found in light emitted naturally from a source.
D) Light that would not otherwise form an image enters a lens and has its direction changed so that it focuses to form an image.

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