Recent content by izMuted

Ah yeah the magnifying glass part makes sense - thanks for explaining

How do I draw the diagram when I don't know if the object is within / outside the focal length? Also I used to think that because the image is bigger it must be virtual, however there are some diagrams on the internet where the image is bigger and the object is outside the focal length, like here:

Homework Statement I know that the object distance is 15 using the equation m = - (v/u) (+ or - depending on real / virtual) 2 = (+ or -) 30/u u = 15 However how do I know if the image is real or virtual? Homework Equations m = - (v/u) The Attempt at a Solution

Homework Statement In magnification, I keep on confusing the signs. From what I understand currently, magnification is positive when the image is erect. An image is only erect when it is a virtual image, therefore virtual images = positive magnification. Vice versa, magnification is negative...