1 answer

Calculate the required radius of curvature for the mirror.

Question:

A shaving/makeup mirror is designed to magnify your face by afactor of 1.2 when your face is placed20.5 cm in front of it.(c) Calculate the required radius of curvature for themirror.
cm

Answers

Magnification of the mirror m = 1.2v/ u = 1.2Distance of the object u = 20.5 cm∴ Distance of the image v = 1.2 u=24.6 cmFrom the relation ( 1/ u ) + ( 1/ v ) = ( 1/ f ) we findfocal length of the mirror f value∴ Radius of curvature for the mirror R = 2fsubstitue values weget answer.

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