lens combination hard

Question

Equivalent power of thin lenses in contact is:

RankGuru · Accepted Answer

When several thin lenses are placed in contact, the effective power ($P$) of the combination is the algebraic sum of the individual powers:
$P = P_1 + P_2 + P_3 + ...$
This implies for focal lengths: $\frac{1}{F} = \frac{1}{f_1} + \frac{1}{f_2} + ...$
- This arrangement increases the field of view and reduces aberrations.

Rank Guru

lens combination hard

Select the correct option: