Convex Mirror Focal Length Calculation
A student measures that the virtual image formed by a convex mirror appears to be located 12 cm behind the mirror when the object is placed 30 cm in front of the mirror. What is the focal length of this convex mirror?
A
20 cm
B
-10 cm
C
-20 cm
D
-40 cm
Question Leaderboard
Not enough data yet to show leaderboard.