Physics
Magnification
Lens/mirror magnification.
Formula
Formula
M = −dido
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| dᵢ | image distance | computed result | — | result |
| dₒ | object distance | computed result | — | result |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givenimage dist dᵢ = 15, object dist dₒ = 30
Result-0.5
Example 2
Givenimage dist dᵢ = 60, object dist dₒ = 20
Result-3