Optics Type

50 cm

Object Properties

40 cm
120 cm

Tip: You can also drag the object directly on the canvas

Display Options

Lens/Mirror Equation

The relationship between object distance (d₀), image distance (dᵢ), and focal length (f) is given by:

1/f = 1/d₀ + 1/dᵢ

Where:

  • f is the focal length of the lens/mirror
  • d₀ is the distance from the object to the lens/mirror
  • dᵢ is the distance from the image to the lens/mirror

Magnification

The magnification (M) is the ratio of image height to object height:

M = hᵢ/h₀ = -dᵢ/d₀

Where:

  • hᵢ is the image height
  • h₀ is the object height
  • dᵢ is the image distance
  • d₀ is the object distance

Current Measurements

60.0 cm
Image Distance
-20.0 cm
Image Height
-0.50
Magnification
Real
Image Type

Ray Diagram Explanation

The ray diagram shows how light rays from the object interact with the optical element:

  • Ray 1 (Blue): Parallel to principal axis, passes through focal point after refraction/reflection
  • Ray 2 (Green): Passes through optical center, continues in straight line
  • Ray 3 (Orange): Passes through focal point, emerges parallel to principal axis

The intersection of these rays determines the position and size of the image.