15.5 A mirror produces an inverted image 2.80 cm tall when a 5.60 cm tall object is 25.0 cm away from it. (a) What is the image
distance? State your answer with the correct sign. (b) What is the focal length of the mirror? State your answer with the
correct sign.
(a) cm
(b) cm15.6 You wish to use a concave mirror to produce a virtual image that is three times the size of an object. (a) Which will be closer
to the mirror, the image or the object? (b) If the object is 22.0 cm from the mirror at this magnification, what is the radius of
curvature of the mirror?
(a) i. Image
ii. Object
iii. They are equidistant from the mirror
(b) cm15.7 A planar mirror is placed at the origin on a number line with the reflective side facing the positive direction. A convex mirror
with focal length í22.0 cm is placed at x = 35.0 cm with its reflective side facing the planar mirror. An object is placed at
x = 19.0 cm. What is the distance between the image of the object created by the planar mirror and the image of the object
created by the convex mirror?
cm15.8 A mirror of focal length 22.6 cm creates an image with magnification í0.350. What is the image distance?
cm15.9 An object and its image are both 12.4 cm from a spherical mirror, and on the same side of the mirror. (a) Is the mirror
concave or convex? (b) What is the mirror's focal length? State your answer with the correct sign.
(a) Concave Convex
(b) cm15.10You look into a shaving mirror and the upright image of your face is 40.0 cm away from you. The image has a magnification
of 1.50. (a) How far away are you from the mirror? (b) What is the radius of curvature?
(a) cm
(b) cm15.11You place an object 34.0 cm in front of a convex mirror and the image produced is half the height of the object. What is the
focal length of the mirror? State your answer with the correct sign.
cm15.12A convex mirror has a radius of curvature of 36.0 cm. When a 5.60 cm tall object is placed in front of the mirror, the
magnification is 0.250. (a) What is the height of the image? (b) How far is the object from the mirror?
(a) cm
(b) cmSection 17 - Interactive problem: optical bench with a mirror
17.1 Use the information given in the first interactive problem in this section to calculate the focal length required for the image to
appear at the desired location. Test your answer using the simulation.
cm17.2 Use the information given in the second interactive problem in this section to calculate the focal length required to produce
the desired magnification. Test your answer using the simulation.
cm