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Lens Combination Separated by Distance
### Formula
$$P=P_1+P_2-dP_1P_2$$
### Terminologies
- P → Equivalent power.
- P1, P2 → Powers of lenses.
- d → Distance between lenses.
### Usage
- Used for separated lens systems.
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Lens Combination Separated by Distance
### Formula
$$P=P_1+P_2-dP_1P_2$$
### Terminologies
- P → Equivalent power.
- P1, P2 → Powers of lenses.
- d → Distance between lenses.
### Usage
- Used for separated lens systems.
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