Asked by Barbie
A man 1.5meter tall stands in front of a concave mirror whose radius is 30cm. Find the position of the man that will lead to his image on the screen 20 cm. from the mirror. How big is the man's image?
Answers
Answered by
drwls
The focal length of the mirror is R/2 = 15 cm.
You must by now be familiar with the equation
1/do + 1/di = 1/f
which in your case becomes
1/do + 1/20 = 1/15
Solve for do (the object distance). The magnification will be di/do.
Multiply that by 1.5 meters for the image size
You must by now be familiar with the equation
1/do + 1/di = 1/f
which in your case becomes
1/do + 1/20 = 1/15
Solve for do (the object distance). The magnification will be di/do.
Multiply that by 1.5 meters for the image size
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.