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The *inverted image is* (1) Half the size of the object (2) 1/4th the size of th

ID: 2101038 • Letter: T

Question

The *inverted image is*

(1) Half the size of the object

(2) 1/4th the size of the object

(3) 3x the size of the object

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The right-sided image is

(4) twice the size of the object.


I don't understand how to calculate this without focal length being known. I DO know the formula

1/f=1/p +1/i.

I also know that for magnification, we have m=-i/p. For an image with same orientation as the object, m is +. For an image with opposite orientation (IE inverted) it's negative. Thus, for the first 3 questions m=+. For the last one, m is negative.

I need an explanation that includes rationale for why I can disregard focal length, and/or substitute in something else that allows me to calculate this.

Explanation / Answer

can you post the complete question? or else i can do answers in terms of focal length