PHYSICAClass 12 Physics simulations · Ray Optics and Optical Instruments
Real and apparent depth
Look straight down into a pool. Refraction makes the coin on the bottom appear raised.
What to notice
Light bends away from the normal as it leaves the water, so the eye traces it back to a shallower point.
Key relation
apparent depth = real depth / n ; shift = d(1 − 1/n)
Try this
Try glass (1.5) and diamond (2.42) with the same depth.
What you can change
- Real depth: 0.2 to 3 m
- Refractive index: 1 to 2.42
More in Ray Optics and Optical Instruments
- Astronomical telescope
- Compound microscope
- Image in a concave mirror
- Two thin lenses in contact
- 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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