When an object is 12 cm in front of a concave mirror, the image is 3.0 cm in front of the mirror? What is the focal length of the mirror?
A) -0.25 cm
B) -1.3 cm
C) 2.4 cm
D) 15 cm
E) 4.0 cm

Question

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The Answer of When an object is 12 cm in front of a concave mirror, the image is 3.0 cm in front of the mirror? What is the focal length of the mirror?
A) -0.25 cm
B) -1.3 cm
C) 2.4 cm
D) 15 cm
E) 4.0 cm

When an Object Is 12 Cm in Front of a Concave