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December 21, 2014

Homework Help: science

Posted by Anonymous on Tuesday, July 26, 2011 at 5:56pm.

1. A convex mirror with a focal length of -20cm forms an image 15cm behind the surface. If the object height is 1.2cm what is the image height?

3. A solid glass sphere with a radius of 5cm and index of refraction of 1.52 has a small coin embedded 3cm from the front surface of the sphere. For the viewer looking at the coin through the glass, at what distance from the front surface of the glass does the coin's image appear to be located?

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