The image of an object formed by a lens has magnification -1. If the distance between the object and its image is 60cm, what is the focal length of the lens? If
the object is moved 20cm towards the lens ,where would the image be
formed?Draw a ray diagram to illustrate your answer?

answer: what are you talking about?

explanation:

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this

the following is queen elizabeth’s purposes:

- to encourage the parliament that the technique of picking successors to the seat based merely on birthright needs to be reviewed.

- (not) to convince the parliament that her kid should not be measured as a likely choice for heir to the english power.

- to persuade the parliament that merely since she has a child does not assure that the kid will be a capable leader.

- to sway the parliament how shattering it could be if they proceeded discourteously concerning her or her child.