Calculation about virtual image

[barryj]

Homework Statement

See my attached information

Homework Equations

On my attached solution

The Attempt at a Solution

see my attached sheet

Please see my attached write up.
I would appreciate a quick nudge as stated.

 

[ehild]

Homework Statement

See my attached information

Homework Equations

On my attached solution

The Attempt at a Solution

see my attached sheet

Please see my attached write up.
I would appreciate a quick nudge as stated.

Make a picture. Note that the virtual image is on the same side of the lens as the object. And the image distance has to be taken negative, if it is virtual image.

 

[barryj]

Thank you. Yes, a picture really is the key here.