Ray diagrams Same rays as we drew for mirrors

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Lenses. Transparent material is capable of causing parallel rays to either converge or diverge depending upon its shape.

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Presentation transcript:

Ray diagrams Same rays as we drew for mirrors Rays will always go through the mirror (not reflected) but will be somehow bent (refracted)

Useful Definitions Lens – a transparent object that refracts light rays, causing them to converge or diverge to create an image. **Big difference with mirrors** Real is on the right side of the lens. Why? + side of mirror is ride side - side of mirror is left side

Converging lens #1 2F F C F 2F Real, Inverted, Reduced Image

Converging lens #2 2F F C F 2F Real, Inverted, True (Same size) Image

Converging lens #3 2F F C F Real, Inverted, Enlarged Image

Converging lens #4 F C F Virtual, Upright, Enlarged Image

For converging lenses f is positive p is positive q is positive for real images and negative for virtual images M is negative for real images and positive for virtual images hi is negative for real images and positive for virtual images

Diverging lens F C F Virtual, Upright, Reduced Image

For diverging lenses f is negative p is positive q is negative M is positive and < 1 hi is positive and < ho