Assertion: lens's power | /r/HasProperty | different focal
Facets:
Source sentences:
text: Definition: An achromatic lens can be defined as a lens which is made by a combination of two different types of lenses carrying different focal powers in a manner such that the images formed by the light of both the combined lenses are free from chromatic aberration or achromatism.
text: The magnifying power is equivalent to angular magnification (this should not be confused with optical power, which is a different quantity).