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September 20, 2014

September 20, 2014

Posted by **Jo** on Tuesday, March 19, 2013 at 1:33pm.

b) the heigh of the image cast by the lens is ________inches?

- physics -
**drwls**, Tuesday, March 19, 2013 at 1:44pm(a) Use the lens formula.

1/5.5 + 1/55 = 1/f

Solve for the focal length, f.

10/55 + 1/55 = 11/55 = 1/5 = 1/f

One more step.

(b) image height = (object height)x(55/5.5)

= 5*10 = ___ inches

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