PHYSICAClass 12 Physics simulations · Ray Optics and Optical Instruments
Two thin lenses in contact
Combine converging and diverging lenses and discover their equivalent optical power.
What to notice
Equal and opposite powers cancel, making an afocal pair in the thin-lens limit.
Key relation
Peq = P₁ + P₂; feq = 1/Peq
Try this
Choose +5 D and −5 D to cancel the optical power.
What you can change
- First lens power: -10 to 10 D
- Second lens power: -10 to 10 D
More in Ray Optics and Optical Instruments
- Real and apparent depth
- Astronomical telescope
- Compound microscope
- Image in a concave mirror
- Image through a convex lens
- Lens maker’s formula
- Images in two inclined mirrors
- Guiding light in an optical fibre
- Prism: angle of minimum deviation
- Dispersion through a prism
- Refraction and total internal reflection
- Spherical mirrors: ray diagram
- Total internal reflection
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