A single bi-concave lens (a lens with two concave surfaces) made of glass (n= 1.

Question

A single bi-concave lens (a lens with two concave surfaces) made of glass (n= 1.33) has surfaces with radii of curvature r1=-26.0cm and r2=26.0cm. What is the focal length of the lens in air?



If an object is placed at p= 16.0 centimeters from the lens, where is the image? (Use a positive sign for a real image or a minus sign for a virtual image.)




If the object has a height of h= 3.00 centimeters, how large is the image? (Use a positive sign for an upright image or a minus sign for an inverted image.)

Explanation / Answer

a ) 13 b ) 69.44 d ) -13.02

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