A convex mirror has a focal length of −29 cm. What is the object distance if...

Question

Question

A convex mirror has a focal length of −29 cm. What is the object distance if the image distance is −21.8 cm? Answer in units of cm.

Answer 1

Answer #1

here,

the image distance , di = - 21.8 cm

the focal length , f = - 29 cm

let the object distance be do

using the mirror formula

1/f = 1/do + 1/di

- 1/29 = 1/do - 1/21.8

do = 87.81 cm

the object distnace is 87.81 cm

Answer 2

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