# physics

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the magnification caused by a convex lens is represented by Hi/Ho, where hi is the height of the image and ho is the height of the object. Using that ratio, show that the magnification caused by a convex lens is equal to di/do(ratio of the image distance to the object distance.

• physics -

From similar triangles:
Hi/di =Ho/do
=> Hi/Ho=di/do =M

• physics -

fairly simple
M=hi/ho
also M=-di/do

therefore

M=hi/ho
-di/do=hi/ho
hi/ho=hi/ho

• physics -

error:
fairly simple
M=hi/ho
also M=-di/do

therefore

M=hi/ho
-di/do=hi/ho
hi/ho=-di/do

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