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Q. 37

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 991

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Short Answer

A tall object is in front of a diverging lens that has a focal length.
Use ray tracing to find the position and height of the image. To do this accurately, use a ruler or paper with a grid. Determine the image distance and image height by making measurements on your diagram. Calculate the image position and height. Compare with your ray-tracing answers in part .


The image distance is and image height is


The image distance is and image height is

Both part agrees the condition.

See the step by step solution

Step by Step Solution

Step: 1 Finding lateral magnification:  

From thin lens equation,

The convex lens of focal lens is positive and concave lens is negative:the image virutal is negative and real image distance is positive.

The lateral magnification is

The object height is

The lens is diverging.

The distance lens object is

The focal length is

Step: 2 Finding image distance: (part a)  

From lens equation is

The ray trace diagram is

Step: 3 Finding image height: (part b) 

The lateral magnification lens by

By comparing, the both parts are agree.

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