Sign Conventions Flashcards
1
Q
Object distance (Do) rules
A
Object distances are always positive
2
Q
Image distance (Di) rules
A
Image distances are positive if its a real image, and negative if its a virtual image.
3
Q
Focal Length (F) rules
A
The focal length is positive for converging lenses, and negative for diverging lenses.
4
Q
Magnification (M) rules
A
The magnification is positive for upright images and negative for inverted images
5
Q
Object height (Ho) rules
A
The object height is always positive
6
Q
Image height (Hi) rules
A
The image height is positive for upright images and negative for inverted images.
7
Q
Magnification rules regarding 1.
A
If M is greater than 1(absolute value), the image is bigger than the object, but if M is smaller than 1(absolute value), the image is smaller than the object.
