lens, mirror, combinations of lenses, None of the above" /> lens, mirror, combinations of lenses, None of the above" /> lens, mirror, combinations of lenses, None of the above" />

Large astronomical telescopes always use as objective

A)
lens
B)
mirror
C)
combinations of lenses
D)
None of the above

Correct Answer :   combinations of lenses

Published On : July 3, 2020