My Notes Ask Your A concave mirror has a focal length of 18 cm. This mirror form

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My Notes Ask Your A concave mirror has a focal length of 18 cm. This mirror forms an image located 72 cm in front of the mirror. What is the magnification of the mirror? (Include the sign.) .3 Additional Materials l Video 11. -12 points CJ9 25.P024 My Notes O Ask Your Teacher A concave mirror ( 52 cm) produces an image whose distance from the mirror is one-fifth the object distance. (a) Determine the object distance. (b) Determine the (positive) image distance. 1.5/1.5 polints 1 Previous Answers Cu9 25 P.033.G0 A concave makeup mirror is designed so the virtual image it produces is twice the size of the object when the distance between the object and the mirror is 20 cm. What is the radius of curvature of the mirror? R> 80 v' GO Tutorial | 12. My Notes Ask Your Submit Assignment Save Assignment Progress Home My Assignments Extension Request

Explanation / Answer

f = 52 cm
v/u = 1/5
v = u/5
from mirror formula
1/f = 1/u +1/v
1/18 = (1/u) +(5/u)
u =108 cm
(b) v = 108/5
v = 21.6 cm

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