A spherical mirror is polished on both sides. When the convexside is used as a m

Question

A spherical mirror is polished on both sides. When the convexside is used as a mirror, the magnification is +1/4. What is themagnification when the concave side is used as a mirror, the objectremaining the same distance from the mirror? A spherical mirror is polished on both sides. When the convexside is used as a mirror, the magnification is +1/4. What is themagnification when the concave side is used as a mirror, the objectremaining the same distance from the mirror? A spherical mirror is polished on both sides. When the convexside is used as a mirror, the magnification is +1/4. What is themagnification when the concave side is used as a mirror, the objectremaining the same distance from the mirror?

Explanation / Answer

for convex mirror m=v/u=1/4=f/u+f=R/2u+R so u=3R/2 substituting the value of u in the below equation we get for concave mirror m=f/u-f =R/2u-R=R/2R=1/2

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