135k views
4 votes
A camera lens focuses on an object

75.0 cm from the lens. The image
forms 3.50 cm behind the lens.
What is the magnification of the
image? PLS HELP

User Pbreach
by
4.6k points

2 Answers

4 votes

Answer:

M = -0.047

Step-by-step explanation:

if you got 0.047 you used the wrong equation -> m = image height/object height

the correct equation is:

M = image height/object height = -(image distance/object distance)

User Suketu Bhuta
by
4.3k points
3 votes

Answer:

m = 0.047

Step-by-step explanation:

We have given that, a camera lens focuses on an object 75 cm from the lens, it means that the object distance is 75 cm

The image forms 3.50 cm behind the lens. It means that the image distance is 3.5 cm.

It is required to find the magnification of the image. The ratio of image distance to the object distance is called magnification. So,


m=(v)/(u)\\\\m=(3.5)/(75)\\\\m=0.047

So, the magnification of the image is 0.047

User Athena
by
4.7k points