The reflection of a 10.0 cm object appears to be 18 cm tall and 9 cm behind the mirror. What distance is the object from the mir

Question

The reflection of a 10.0 cm object appears to be 18 cm tall and 9 cm behind the mirror.

What distance is the object from the mirror?

cm

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Hưng Khoa 4 years 2021-09-03T18:10:58+00:00 2 Answers 58 views 0

Answers ( )

  1. Latifah
    0
    2021-09-03T18:12:24+00:00
    Reply

    Answer: 5cm

    Explanation:

    Given the following :

    Image height = 18cm

    Object height = 10cm

    u = object distance

    v = image distance = 9 cm

    Using the relation:

    image height/object height= v/u

    18/10 = 9/u

    Cross multiply

    18 × u = 10 × 9

    18u = 90

    u = 90/18

    u = 5cm

    Therefore,

    Object distance from mirror = 5cm

  2. thanhcong
    0
    2021-09-03T18:12:45+00:00
    Reply

    Answer:

    5 cm

    Explanation:

    correct on edge 2020/2021

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