A convex spherical mirror has a focal length of -20 cm. An object is placed 10 c

Question

1. A convex spherical mirror has a focal length of -20 cm. An object is placed 10 cm in front of the mirror on the mirror's axis. Where is the image located? (PageRef: Sec. 23.3) 20 cm behind the mirror 20 cm in front of the mirror 6.7 cm behind the mirror 6.7 cm in front of the mirror

A convex spherical mirror has a focal length of -20 cm. An object is placed 10 cm in front of the mirror on the mirror's axis. Where is the image located? (PageRef: Sec. 23.3) 20 cm behind the mirror 20 cm in front of the mirror 6.7 cm behind the mirror 6.7 cm in front of the mirror A convex spherical mirror has a focal length of -20 cm. An object is placed 10 cm in front of the mirror on the mirror's axis. Where is the image located? (PageRef: Sec. 23.3) 20 cm behind the mirror 20 cm in front of the mirror 6.7 cm behind the mirror 6.7 cm in front of the mirror 20 cm behind the mirror 20 cm in front of the mirror 6.7 cm behind the mirror 6.7 cm in front of the mirror

Explanation / Answer

1/i + 1/o = 1/f

1/i + 1/10 = -1/20

1/i = -1/20 - 2/20 = -3/20

i = - 6.7 cm

- means behind mirror

so 6.7 cm behind mirror

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