A lens is used to make an image of magnification -1.50. The image is 30.0 cm from the lens. What is the object’s distance (unit=cm)? PLS HEL

Question

A lens is used to make an image of magnification -1.50. The image is 30.0 cm from the lens. What is the object’s distance (unit=cm)? PLS HELP

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Khải Quang 4 weeks 2021-08-17T12:30:40+00:00 1 Answers 0 views 0

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    2021-08-17T12:31:47+00:00

    Answer: 20cm

    Explanation:

    Given the following data:

    Magnification of image = – 1.50

    Distance of image from the lens = 30.0cm

    The Magnification of an image is the ratio of the image distance from the lens and the object distance from the lens.

    Mathematically,

    Magnification(M) = – (image distance (di) / object distance (do))

    M = – (di/do)

    -1.50 = – (30/do)

    do = 30 / 1.5

    do = 20 cm

    Object is placed at a distance of 20cm from the lens.

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