faria123 said:Homework Statement
The image obtained with a converging lens is upright and 3x the length of the object. The focal length of the lens is 20cm. Calculate the object and image distances
Homework Equations
I have absolutely no idea how to even start this question
The Attempt at a Solution
1/object + 1/image = 1/focal (lens equation )
1/ob + 1/im= 1/20
M = ob/im ( magnification formula)
3= ob/im
I tried solving for each variable but it wasnt working...
To calculate image distance in optics, you can use the formula: di = do x m, where di is the image distance, do is the object distance, and m is the magnification.
The image distance is directly proportional to the focal length, meaning that as the focal length increases, the image distance also increases.
Yes, you can calculate the image distance without knowing the magnification by using the formula: di = (do x f) / (do - f), where f is the focal length.
Magnification plays a significant role in determining the image distance. A higher magnification will result in a larger image distance, while a lower magnification will result in a smaller image distance.
Real images are formed when light rays converge and can be projected onto a screen, whereas virtual images are formed when light rays appear to diverge and cannot be projected onto a screen. Real images have a positive image distance, while virtual images have a negative image distance.