A student is getting her picture taken by a digital camera. The student is ho=1.

Question

A student is getting her picture taken by a digital camera. The student is ho=1.55 m tall and she stands 4.75 m in front of the camera lens which has a focal length of f=0.012 m.

Numerically, what is the mangification of the system?

Numerically, what is the image height?

Class Management I Help Assignment ll (C&J; 26) Begin Date: 4/18/2017 12:00:00 AM Due Date: 5/9/2017 12:00:00 AM End Date: 5/9/2017 12:00:00 AM (22%) Problem 3: A student is getting her picture taken by a digital camera. The student is ho 1.55 m tall and she stands do 4.75 m in front of the camera lens which has a focal length off 0.012 m. Randomized Variables ho 1.55 m do 4.75 m f 0.012 m 25% Part (c) Numerically, what is the magnification of the system? A 25% Part (d) Numerically, what is the image height?

Explanation / Answer

object height, ho=1.55 m

object distance, u=4.75 m

focal length, f=0.012 m

a)

use,

1/f=1/u + 1/v

1/0.012 = 1/4.75 + 1/v

===> image distance, v=0.012 m

magnification, m=-v/u

m=-0.012/4.75

m=-0.0.0025

b)

use,

m=h'/h

0.0025=h'/1.55

===> h=0.00387 m or h=3.87 mm

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