Convex Mirror Image Calculation

AI Thread Summary
The discussion focuses on solving a convex mirror problem involving a focal length of 75 cm and an object height of 2.0 m located 6.0 m from the mirror. The calculation for the distance of the virtual image from the mirror yields a result of 0.857 m, but the expected answer is -0.67 m, indicating a need to apply the correct sign convention for the focal length, which should be negative for convex mirrors. For the height of the image, the magnification formula (m = di/do) is suggested for further calculation. Proper application of these principles will lead to accurate results for both parts of the problem.
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Convex mirror problem help??

Homework Statement


a convex mirror has a focal length of 75cm. an object with a height of 2.0m is 6.0m from the mirror.
a) what is the distance from the object's virtual image to the mirror?
b) what is the height of the object's image?


Homework Equations



1/f = 1/do + 1/di

The Attempt at a Solution


1/0.75m = 1/6.0m + 1/di
di = 0.857m

but the answer should be -0.67 for a and i don't know part b
 
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Use proper sign convension. Focal length of the convex mirror to be taken as negative.
For second part, use magnification formula. m = di/do
 


thanks! ^^
 

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