Mirror Equation Video Lessons

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Problem: An object located 125 cm from a concave mirror forms a real image 80 cm from the mirror. The mirror is then turned around so that its convex side faces the object, and is moved so that the image is now 40 cm behind the mirror. How far was the mirror moved? 1. 90.9091 2. 13.6957 3. 134.146 4. 97.2222 5. 70.0 6. 107.66 7. 164.434 8. 10.5263 9. 8.28829 10. 86.0377

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Problem Details

An object located 125 cm from a concave mirror forms a real image 80 cm from the mirror. The mirror is then turned around so that its convex side faces the object, and is moved so that the image is now 40 cm behind the mirror. How far was the mirror moved?

1. 90.9091

2. 13.6957

3. 134.146

4. 97.2222

5. 70.0

6. 107.66

7. 164.434

8. 10.5263

9. 8.28829

10. 86.0377

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Mirror Equation concept. You can view video lessons to learn Mirror Equation. Or if you need more Mirror Equation practice, you can also practice Mirror Equation practice problems.

How long does this problem take to solve?

Our expert Physics tutor, Douglas took 10 minutes and 39 seconds to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Mesa's class at LSU.