# True or False: The quantities di and d0 are measured from the focal point of a lens or mirror.

## Question:

True or False: The quantities di and d0 are measured from the focal point of a lens or mirror.

## Mirror:

The mirror has different parameters that defined the classification of the mirror, e.g. focal length, aperture, etc. If the focal length of the mirror is negative, that means it is a converging mirror.

False

The statement is false.

Because all the parameters are measured from the pole of the mirror.