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L6-12. Magnifying Lens In Water
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L6-12. Magnifying Lens In Water
Purpose
To show that the focal properties of a lens depend on the medium in which the lens is located.
Equipment
Lens-fuse box assembly, water tank.
Setup Time
5 minutes.
Images
Description
A small fuse box is mounted on a holder at a distance less than the focal length behind a convex lens, so the lens acts as a magnifying glass. Note, in the photo at the left, the magnification of the fuse box when the system is in air. Then dip the entire lens-object system into water. Because there is much less bending of the light at the water-glass interfaces than at the air-glass interfaces, the magnification is much less.
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See pagesl1. light sources & light rays
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See pagesl2. plane mirrors
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See pagesl3. curved mirrors
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See pagesl4. refraction
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See pagesl5. total internal reflection
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See pagesl6. lenses
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See pagesl7. optical instruments
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See pagesl1. light sources & light rays
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See pagesl2. plane mirrors
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See pagesl3. curved mirrors
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See pagesl4. refraction
-
See pagesl5. total internal reflection
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See pagesl6. lenses
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See pagesl7. optical instruments
Physics Lab Demos