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Chery Chery
wrote...
Posts: 3598
2 years ago
Tan's face is 20 cm in front of a concave shaving mirror. If he observes his image to be twice as big and upright, what is the focal length of the mirror?
A) 10 cm
B) -40 cm
C) -50 cm
D) 40 cm
E) 50 cm
Textbook 

College Physics


Edition: 1st
Authors:
Read 575 times
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noreyaganoreyaga
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Top Poster
Posts: 649
2 years ago
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wrote...
2 years ago
Looked all over the internet for this, thank you for answering correctly
wrote...
A week ago
how did you get to that answer?
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