Tuesday

March 3, 2015

March 3, 2015

Posted by **Emily** on Thursday, May 27, 2010 at 12:19am.

(USe the thin lens equation)

For this question, how would you know whether the image is virtual or real?(in order to know if the distance to the mirror is negative or positive)

- Physics -
**drwls**, Thursday, May 27, 2010 at 7:03amSolve

1/do + 1/di = 1/do + 1/14 = 1/f = 1/7

The answer is that the object distance is (do) = 14. You get a 1:1 real image.

The image is real because do is positive.

**Answer this Question**

**Related Questions**

Physics - i have a question on thin lens equation how do i know when di is ...

physics - A 7·cm tall candle is placed 125·cm from a lens with a focal length of...

physics - A box is placed 50 cm away from a double convex lens. The image is on...

Science Important - 1. A toy of height 18.4 cm is balanced in front of a ...

physics - Where should the birthday candle of height 5 cm be placed in front of...

calculus problem - the thin lens equation in physics is 1/s+1/S=1/f where s is ...

Physics: Lenses - 1) A convex lens with a focal lenght of 4.0cm is placed 20.0cm...

Physics - A lens with a focal length of 25 cm is placed 45 cm in front of a lens...

CALCULUS - If you could give an explenation with the answers, that'd be ...

Physics - An object, that is 3.25 mm high is placed 16 cm in front of a lens. ...