Convex Mirror - Object Far
Object Distance (do): 100 cm; Image Distance (di): -10 cm
Magnification (M): 0.1; Focal Length (f): -11.11111111 cm
Mirror Equation Calculator
Physics0.0(0)
This calculator determines the relationship between object distance, image distance, and focal length for a spherical mirror using the mirror equation.
More tools:Science & Lab Calculators
How To Use
How to use this calculator
Start with your values, or try a preset.
Step 1
Enter Object Distance (do) and Image Distance (di) in the units shown.
Step 2
Read Magnification (M) and Focal Length (f) in the results panel. Results update as you change the inputs.
Step 3
Choose a preset to load an example, then adjust the values for your situation.
Worked Examples
Example calculations
See the inputs and their calculated results.
Convex Mirror - Object Close
Object Distance (do): 20 cm; Image Distance (di): -5 cm
Magnification (M): 0.25; Focal Length (f): -6.666666667 cm
Concave Mirror - Real Image
Object Distance (do): 60 cm; Image Distance (di): 30 cm
Magnification (M): -0.5; Focal Length (f): 20 cm
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