Reflection.

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Presentation transcript:

Reflection

Flat (plane) mirror

Virtual: image is formed behind mirror di = do Image is same distance from mirror hi = ho Image is same height as object

Spherical Mirrors Ray Tracing 1. Parallel : Focal Pt. Focal Pt : Parallel 3. Center of curvature : Center of curvature

Example: What is the final intensity if a third polarizer is added in the middle oriented at 45o?

Sunglasses

The mirror Equation 1/f = 1/do + 1/di M = hi/ho = -di/do di + : Real image di - : Virtual image M + : Upright image M - : Inverted image |M| > 1 : larger image |M| < 1 : smaller image

An object is 3cm high and located 20cm from a concave mirror with a focal length of 5cm. Where is the image located? Is it real or virtual, upright or inverted, larger or smaller?