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science

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an object 5 millimeters high is loacated 15 millimeters in front of a plane mirror. how far from the mirror is the image located?

  • science - ,

    Can someone check me on this please.

    the formula is:

    1/d1 = (1/f)-(1/d0)

    where
    d1 = image distance
    f = focal length of the mirror(object height)
    d0 = object distance from the mirror

    giving you:
    1/d1 = (1/15mm) - (1/5mm)
    1/d1 = -0.1333333 recurring

    take the inverse of this number giving:
    d1(image distance) = -0.1333333^-1
    d1(image distance) = -7.5mm

  • science - ,

    If it is a plane mirror the image appears to be as far behind the mirror as the object is in front.

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