Consider a makeup mirror that produces a magnification of 1.7 when a person’s face is 11.5 cm away. What is the focal length of the makeup mirror in meters?

A concave mirror has the focal length equal to 0.609 m. To form a real image that is triple the size of the object on a screen, at what distance in front of the mirror should the screen be placed (in m; answer a positive number)?

A plano-convex lens is one with a convex surface on one side and a flat surface on the other.  Suppose a thin lens is made of glass with index of refraction 1.5.  If the radius of curvature of the curved surface is 1.1 meters, what is the focal length of the lens? Give your answer in meters.

When an object is placed 27.0 cm in front of a convex spherical mirror, a virtual image forms 14.5 cm behind the mirror. Determine the mirror's focal length in cm and the magnification. (a) the mirror's focal length in cm answer in cm (b) the magnification

Chapter 34, Problem 007 A concave shaving mirror has a radius of curvature of +35.2 cm. It is positioned so that the (upright) image of a man's face is 2.29 times the size of the face. How far is the mirror from the face? Number Units Use correct number of significant digits; the tolerance is +/-2%

You have a concave spherical mirror (the same holds if you had a convex mirror) If the value of q (the distance from the image to the mirror along the principal axis of the mirror) is 1.86m and the distance of p (the distance from the object to the mirror along the principal axis of the mirror) is 3.7m, what is the focal length of the mirror? P h A C B h' Q I k 9 P 1 The magnification equation and the sign convention for q imply that real images of real objects are always inverted (if both p and q are positive, m is negative); virtual images of real objects are always upright (if p is positive and q is negative, m is positive). Keeping the signs of p and q straight in your mind is the most challenging aspect of mirrors (and lenses). Fortunately, table 23.2 summarizes when p and q are positive and when they are negative.