If a virtual image is formed 10.0 cm behind a convex mirror with a focal length of -15.0 cm, what is the object's distance from the mirror?

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Answer 1 · 2016-08-05T20:53:31

#u=30" " cm#

#-1/f=1/u-1/u^'#

#f:"represents the focus of convex mirror"#

#u:"object distance to convex mirror"#

#u^':"image distance to convex mirror"#

enter image source here

#-1/15=1/u-1/10#

#1/u=1/10-1/15#

#1/u=(3-2)/30#

#1/u=1/30#

#u=30" " cm#